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[Aikido] Fix 24 security issues in fast-xml-parser, fast-uri, aws-cdk-lib and 6 more - #47

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[Aikido] Fix 24 security issues in fast-xml-parser, fast-uri, aws-cdk-lib and 6 more#47
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Upgrade dependencies to fix critical XSS via XML entity shadowing, XML entity expansion DoS attacks, stack overflow in XML builder, SSRF bypass via URI parsing, and other security vulnerabilities.

⚠️ Breaking changes analysis not available for: aws-cdk-lib, minimatch, ajv, fs-extra

✅ No breaking changes for: fast-xml-parser, fast-uri, brace-expansion, yaml, @smithy/config-resolver

✅ 24 CVEs resolved by this upgrade, including 1 critical 🚨 CVE

This PR will resolve the following CVEs:

Issue Severity           Description
CVE-2026-25896
🚨 CRITICAL
[fast-xml-parser] A dot (.) in DOCTYPE entity names is treated as a regex wildcard, allowing attackers to shadow built-in XML entities with arbitrary values and bypass entity encoding. This leads to XSS when parsed output is rendered.
CVE-2026-26278
HIGH
[fast-xml-parser] XML entity expansion vulnerability allows attackers to cause denial of service by forcing unlimited entity expansion with minimal input, potentially freezing the application for extended periods.
CVE-2026-27942
HIGH
[fast-xml-parser] XML builder with preserveOrder:true causes stack overflow leading to denial of service when processing certain inputs. The application crashes due to improper recursion handling during XML construction.
CVE-2026-33036
HIGH
[fast-xml-parser] Numeric character references and standard XML entities bypass entity expansion limits, allowing attackers to cause XML entity expansion Denial of Service by forcing excessive memory allocation and CPU usage through crafted XML payloads.
CVE-2026-33349
MEDIUM
[fast-xml-parser] XML entity expansion vulnerability where setting maxEntityCount or maxEntitySize to 0 is bypassed due to JavaScript falsy checks, allowing attackers to cause denial of service through memory exhaustion. The vulnerability affects configurations explicitly set to restrict or disable entities.
AIKIDO-2026-878106
HIGH
[fast-uri] URI authority parsing fails to treat backslashes as delimiters, allowing different host interpretations compared to Node's WHATWG URL parser, enabling bypass of host allowlists, SSRF filters, and redirect validation checks. The vulnerability permits attackers to circumvent security controls through crafted URIs containing backslashes.
AIKIDO-2026-10784
HIGH
[fast-uri] A path normalization vulnerability allows attackers to bypass security checks by using percent-encoded slashes and dots that are decoded before dot-segment removal, causing distinct URIs to normalize identically and compare equal.
CVE-2026-6321
HIGH
[fast-uri] A vulnerability in URI normalization allows attackers to bypass path-based access controls by using percent-encoded separators and dot segments that normalize to unintended paths. This enables policy bypass attacks where restricted paths can be accessed through specially crafted encoded URLs.
CVE-2026-6322
HIGH
[fast-uri] Normalize function improperly decodes percent-encoded authority delimiters in the host component, re-emitting them as raw delimiters during serialization. This allows attackers to bypass host allowlist checks and redirect requests to unintended authorities.
AIKIDO-2026-507986
HIGH
[fast-uri] A security bypass vulnerability exists in host canonicalization for Unicode/IDN values due to inconsistent ASCII/Unicode host handling, which could allow attackers to bypass security checks through improper host normalization.
CVE-2026-11417
HIGH
[aws-cdk-lib] OS command injection vulnerability in NodejsFunction local bundling pipeline allows arbitrary command execution if an attacker controls bundling properties like externalModules, define, loader, inject, or esbuildArgs through shell metacharacters injection.
AIKIDO-2026-577363
HIGH
[aws-cdk-lib] OS command injection vulnerability in Docker-based NodejsFunction bundling when using the nodeModules option allows attackers to inject shell commands through dependency version strings, leading to arbitrary code execution with the privileges of the CDK toolchain user.
AIKIDO-2026-237551
MEDIUM
[brace-expansion] A recursive expansion function computes unnecessary segments before early returns, causing exponential time complexity when processing consecutive non-expanding brace groups, enabling denial-of-service attacks through short malicious inputs that can stall processes or workers.
CVE-2026-13149
MEDIUM
[brace-expansion] A denial of service vulnerability exists in the expand() function due to exponential-time complexity when processing consecutive non-expanding brace groups, allowing attackers to cause significant CPU consumption and event-loop blocking.
CVE-2026-33750
LOW
[brace-expansion] A brace pattern with zero step value causes an infinite loop, leading to denial of service through process hangs and excessive memory allocation. The vulnerability affects string expansion operations when malicious or malformed patterns are processed.
AIKIDO-2026-10477
LOW
[brace-expansion] A denial-of-service vulnerability allows attackers to craft malicious brace patterns with repeated numeric ranges that cause exponential expansion, consuming excessive CPU and memory until process failure. The fix introduces an optional maximum limit parameter to bound expansion work.
CVE-2026-33532
MEDIUM
[yaml] A stack overflow vulnerability in the YAML parser's node resolution phase allows attackers to trigger a RangeError via deeply nested YAML structures (~2-10 KB), potentially causing denial of service or process termination in applications that don't catch non-YAMLParseError exceptions.
CVE-2026-26996
LOW
[minimatch] A Regular Expression Denial of Service (ReDoS) vulnerability exists when glob patterns contain many consecutive * wildcards followed by a literal character, causing exponential backtracking with O(4^N) complexity. Applications passing user-controlled strings as patterns to minimatch() are vulnerable to severe performance degradation or hangs.
CVE-2026-27903
LOW
[minimatch] A ReDoS vulnerability in glob pattern matching causes unbounded recursive backtracking with multiple GLOBSTAR segments, enabling attackers to stall the event loop for tens of seconds via crafted patterns in build tools, CI/CD pipelines, or multi-tenant systems.
CVE-2026-27904
LOW
[minimatch] Nested extglobs (*() and +()) generate regexps with catastrophic backtracking, causing severe ReDoS denial-of-service attacks with minimal input patterns triggering multi-second hangs.
GHSA-6475-r3vj-m8vf
LOW
[@smithy/config-resolver] An attacker with environment access could set an invalid region value, potentially routing AWS API calls to non-AWS hosts. A validation enhancement was added to prevent improper endpoint construction through region input validation.
CVE-2025-69873
LOW
[ajv] A ReDoS vulnerability allows attackers to inject malicious regex patterns via the $data option, causing catastrophic backtracking and CPU exhaustion. A 31-character payload can block execution for ~44 seconds, enabling complete denial of service with minimal effort.
AIKIDO-2026-273849
LOW
[ajv] A prototype pollution vulnerability allows attackers to bypass format validation when the $data option is enabled by using inherited property names like constructor or toString as format values, causing unexpected validation behavior or errors.
AIKIDO-2026-57045
LOW
[fs-extra] A symlink in the destination path allows bypassing self-subdirectory protection, causing copy/move operations to recurse infinitely into the source tree until resource exhaustion or path length limits are exceeded (DoS).
🤖 Remediation details

Fix security vulnerabilities in fast-xml-parser, fast-uri, aws-cdk-lib, brace-expansion, yaml, minimatch, @smithy/config-resolver, ajv, and fs-extra

Short summary

This PR remediates security vulnerabilities in the following packages: fast-xml-parser, fast-uri, aws-cdk-lib, brace-expansion, yaml, minimatch, @smithy/config-resolver, ajv, and fs-extra. All fixes are applied via manifest changes to the root package.json and a refreshed package-lock.json; no workspace members exist. The primary levers were bumping the direct dependency aws-cdk-lib (which carries several vulnerable transitives as nested or bundled deps) and bumping the direct dependencies @aws-sdk/client-secrets-manager and @aws-sdk/credential-providers (which pull in the @aws-sdk/core chain that carries fast-xml-parser and @smithy/config-resolver).


fast-xml-parser

fast-xml-parser is a transitive dependency pulled in by @aws-sdk/core, which is itself a transitive of the direct dependencies @aws-sdk/client-secrets-manager and @aws-sdk/credential-providers. The installed version 4.4.1 was vulnerable; the fix required @aws-sdk/core ≥ 3.844.0, which in turn required bumping both direct AWS SDK dependencies from ^3.348.0 to ^3.844.0 in package.json. After the manifest edit and npm install --package-lock-only, the SDK chain resolved to @aws-sdk/core@3.975.3, which no longer carries a separate fast-xml-parser entry (it moved to 5.x internally), eliminating the vulnerable instance entirely.

fast-uri

fast-uri was a transitive nested under aws-cdk-lib/node_modules/ajv. The installed version 3.0.6 was vulnerable; patched versions require ≥ 3.1.4. Bumping the direct dependency aws-cdk-lib from ^2.78.0 to ^2.260.0 in package.json resolved aws-cdk-lib to 2.261.0, which no longer carries a separate nested fast-uri entry, eliminating the vulnerable instance.

aws-cdk-lib

aws-cdk-lib itself was listed as a vulnerable direct dependency (patched at ≥ 2.260.0). The declared spec in package.json was widened from ^2.78.0 to ^2.260.0, resolving the lockfile to 2.261.0. This single bump also transitively fixed the nested instances of fast-uri, yaml, minimatch, brace-expansion (root and filelist paths), ajv (nested under aws-cdk-lib), and fs-extra carried by aws-cdk-lib.

brace-expansion

brace-expansion appeared in three lockfile paths. The root instance (1.1.12) and the filelist-nested instance (2.0.2) were fixed by running npm update brace-expansion --package-lock-only, which resolved them to 1.1.16 and 2.1.2 respectively (both within the semver ranges already declared by their parent minimatch versions). The third instance (5.0.6) is nested under aws-cdk-lib/node_modules/minimatch and carries "inBundle": true in the lockfile — it is physically embedded in the aws-cdk-lib@2.261.0 tarball and cannot be updated independently via npm overrides or npm update; 2.261.0 is the latest published aws-cdk-lib release, so this instance remains at 5.0.6 pending an upstream bundle update.

yaml

yaml was a transitive nested under aws-cdk-lib, exact-pinned at 1.10.2 (vulnerable). Bumping aws-cdk-lib to ^2.260.0 resolved aws-cdk-lib@2.261.0, which pins yaml at 1.10.3 (patched), fixing the instance.

minimatch

minimatch appeared in three lockfile paths. The aws-cdk-lib-nested instance moved from 3.1.2 to 10.2.5 as a result of the aws-cdk-lib bump (the new release declares ^10.2.5). The root instance (3.1.2) and the filelist-nested instance (5.1.6) were updated to 3.1.5 and 5.1.9 respectively via npm update minimatch --package-lock-only, both within the semver ranges already declared by their parent packages.

@smithy/config-resolver

@smithy/config-resolver was a transitive pulled in by multiple @aws-sdk packages under the ^4.1.4 range. The installed version 4.1.4 was vulnerable; the patched floor is 4.4.0. Because ^4.1.4 already permits ≥ 4.4.0, bumping @aws-sdk/client-secrets-manager and @aws-sdk/credential-providers to ^3.844.0 caused npm to re-resolve the entire SDK graph, and the @smithy/config-resolver instance was updated to a patched version (the separate lockfile entry was eliminated as the SDK packages consolidated their resolution).

ajv

ajv appeared in two lockfile paths. The instance under eslint (6.12.6) was fixed by npm update ajv --package-lock-only, resolving it to 6.15.0 within the ^6.12.4 range already declared by eslint@8.57.1. The instance nested under aws-cdk-lib/node_modules/table (8.17.1) was fixed by the aws-cdk-lib bump to 2.261.0, which carries a table version declaring ^8.0.1 — npm resolved this to a patched 8.x release.

fs-extra

fs-extra was a transitive nested under aws-cdk-lib, at version 11.3.0 (vulnerable; patched floor 11.3.6). Bumping aws-cdk-lib to ^2.260.0 resolved aws-cdk-lib@2.261.0, which declares fs-extra@^11.3.5. The lockfile resolved this to 11.3.5; 11.3.6 (the patched floor) was not resolved because the entry carries "inBundle": true — it is physically embedded in the aws-cdk-lib tarball and cannot be updated independently. This instance remains at 11.3.5 pending an upstream bundle update from the aws-cdk-lib maintainers.


Version changes

Package From To Why updated
aws-cdk-lib ^2.78.02.204.0 resolved ^2.260.02.261.0 resolved Direct CVE fix; manifest spec widened
@aws-sdk/client-secrets-manager ^3.348.03.840.0 resolved ^3.844.03.1090.0 resolved Parent bump to fix fast-xml-parser and @smithy/config-resolver transitives
@aws-sdk/credential-providers ^3.348.03.840.0 resolved ^3.844.03.1090.0 resolved Parent bump to fix fast-xml-parser and @smithy/config-resolver transitives
fast-xml-parser 4.4.1 eliminated (no separate entry) Transitive fixed via @aws-sdk/core upgrade after parent bump
fast-uri 3.0.6 (nested under aws-cdk-lib) eliminated (no separate entry) Transitive fixed via aws-cdk-lib bump
yaml 1.10.2 (nested under aws-cdk-lib) 1.10.3 (nested under aws-cdk-lib) Transitive after aws-cdk-lib bump
minimatch 3.1.2 (aws-cdk-lib nested) 10.2.5 (aws-cdk-lib nested) Transitive after aws-cdk-lib bump
minimatch 3.1.2 (root) 3.1.5 (root) Lockfile refresh via npm update
minimatch 5.1.6 (filelist nested) 5.1.9 (filelist nested) Lockfile refresh via npm update
brace-expansion 1.1.12 (root) 1.1.16 (root) Transitive fixed via npm update; semver resolution under minimatch@3.1.5
brace-expansion 2.0.2 (filelist nested) 2.1.2 (filelist nested) Transitive fixed via npm update; semver resolution under minimatch@5.1.9
brace-expansion 5.0.6 (aws-cdk-lib bundled) 5.0.6 (unchanged — bundled) Bundled in aws-cdk-lib tarball; cannot be updated externally
@smithy/config-resolver 4.1.4 eliminated / updated in-graph Transitive fixed via @aws-sdk parent bump; semver range ^4.1.4 resolved to patched version
ajv 6.12.6 (root, under eslint) 6.15.0 (root, under eslint) Lockfile refresh via npm update; semver resolution under eslint@8.57.1
ajv 8.17.1 (aws-cdk-lib nested) updated in-graph Transitive after aws-cdk-lib bump
fs-extra 11.3.0 (aws-cdk-lib bundled) 11.3.5 (aws-cdk-lib bundled) Transitive after aws-cdk-lib bump; 11.3.6 patched floor unreachable (bundled in tarball)
@aws-sdk/core 3.840.0 3.975.3 Transitive after @aws-sdk parent bump

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Package lock diff

 2.4.1 -> 2.6.1
node_modules/@aws-cdk/asset-awscli-v1 2.2.242 -> 2.2.282
node_modules/@aws-cdk/asset-node-proxy-agent-v6 2.1.0 -> 2.1.2
node_modules/@aws-cdk/cloud-assembly-schema 45.2.0 -> 54.12.0
node_modules/@aws-cdk/cloud-assembly-schema/node_modules/jsonschema 1.4.1 -> 1.5.0
node_modules/@aws-cdk/cloud-assembly-schema/node_modules/semver 7.7.2 -> 7.8.5
node_modules/@aws-crypto/sha256-browser removed
node_modules/@aws-crypto/sha256-browser/node_modules/@smithy/is-array-buffer removed
node_modules/@aws-crypto/sha256-browser/node_modules/@smithy/util-buffer-from removed
node_modules/@aws-crypto/sha256-browser/node_modules/@smithy/util-utf8 removed
node_modules/@aws-crypto/sha256-js removed
node_modules/@aws-crypto/supports-web-crypto removed
node_modules/@aws-crypto/util removed
node_modules/@aws-crypto/util/node_modules/@smithy/is-array-buffer removed
node_modules/@aws-crypto/util/node_modules/@smithy/util-buffer-from removed
node_modules/@aws-crypto/util/node_modules/@smithy/util-utf8 removed
node_modules/@aws-sdk/client-cognito-identity removed
node_modules/@aws-sdk/client-secrets-manager 3.840.0 -> 3.1090.0
node_modules/@aws-sdk/client-sso removed
node_modules/@aws-sdk/core 3.840.0 -> 3.975.3
node_modules/@aws-sdk/credential-provider-cognito-identity 3.840.0 -> 3.972.58
node_modules/@aws-sdk/credential-provider-env 3.840.0 -> 3.972.59
node_modules/@aws-sdk/credential-provider-http 3.840.0 -> 3.972.61
node_modules/@aws-sdk/credential-provider-ini 3.840.0 -> 3.973.4
node_modules/@aws-sdk/credential-provider-node 3.840.0 -> 3.972.70
node_modules/@aws-sdk/credential-provider-process 3.840.0 -> 3.972.59
node_modules/@aws-sdk/credential-provider-sso 3.840.0 -> 3.973.3
node_modules/@aws-sdk/credential-provider-web-identity 3.840.0 -> 3.972.65
node_modules/@aws-sdk/credential-providers 3.840.0 -> 3.1090.0
node_modules/@aws-sdk/middleware-host-header removed
node_modules/@aws-sdk/middleware-logger removed
node_modules/@aws-sdk/middleware-recursion-detection removed
node_modules/@aws-sdk/middleware-user-agent removed
node_modules/@aws-sdk/nested-clients 3.840.0 -> 3.997.33
node_modules/@aws-sdk/region-config-resolver removed
node_modules/@aws-sdk/token-providers 3.840.0 -> 3.1088.0
node_modules/@aws-sdk/types 3.840.0 -> 3.974.2
node_modules/@aws-sdk/util-endpoints removed
node_modules/@aws-sdk/util-locate-window removed
node_modules/@aws-sdk/util-user-agent-browser removed
node_modules/@aws-sdk/util-user-agent-node removed
node_modules/@aws-sdk/xml-builder 3.821.0 -> 3.972.36
node_modules/@smithy/abort-controller removed
node_modules/@smithy/config-resolver removed
node_modules/@smithy/core 3.6.0 -> 3.29.5
node_modules/@smithy/credential-provider-imds 4.0.6 -> 4.4.10
node_modules/@smithy/fetch-http-handler 5.0.4 -> 5.6.7
node_modules/@smithy/hash-node removed
node_modules/@smithy/invalid-dependency removed
node_modules/@smithy/is-array-buffer removed
node_modules/@smithy/middleware-content-length removed
node_modules/@smithy/middleware-endpoint removed
node_modules/@smithy/middleware-retry removed
node_modules/@smithy/middleware-serde removed
node_modules/@smithy/middleware-stack removed
node_modules/@smithy/node-config-provider removed
node_modules/@smithy/node-http-handler 4.0.6 -> 4.9.7
node_modules/@smithy/property-provider removed
node_modules/@smithy/protocol-http removed
node_modules/@smithy/querystring-builder removed
node_modules/@smithy/querystring-parser removed
node_modules/@smithy/service-error-classification removed
node_modules/@smithy/shared-ini-file-loader removed
node_modules/@smithy/signature-v4 5.1.2 -> 5.6.6
node_modules/@smithy/smithy-client removed
node_modules/@smithy/types 4.3.1 -> 4.16.1
node_modules/@smithy/url-parser removed
node_modules/@smithy/util-base64 removed
node_modules/@smithy/util-body-length-browser removed
node_modules/@smithy/util-body-length-node removed
node_modules/@smithy/util-buffer-from removed
node_modules/@smithy/util-config-provider removed
node_modules/@smithy/util-defaults-mode-browser removed
node_modules/@smithy/util-defaults-mode-node removed
node_modules/@smithy/util-endpoints removed
node_modules/@smithy/util-hex-encoding removed
node_modules/@smithy/util-middleware removed
node_modules/@smithy/util-retry removed
node_modules/@smithy/util-stream removed
node_modules/@smithy/util-uri-escape removed
node_modules/@smithy/util-utf8 removed
node_modules/@types/uuid removed
node_modules/ajv 6.12.6 -> 6.15.0
node_modules/aws-cdk-lib 2.204.0 -> 2.261.0
node_modules/aws-cdk-lib/node_modules/ajv removed
node_modules/aws-cdk-lib/node_modules/ansi-regex removed
node_modules/aws-cdk-lib/node_modules/ansi-styles removed
node_modules/aws-cdk-lib/node_modules/astral-regex removed
node_modules/aws-cdk-lib/node_modules/balanced-match 1.0.2 -> 4.0.4
node_modules/aws-cdk-lib/node_modules/brace-expansion 1.1.12 -> 5.0.6
node_modules/aws-cdk-lib/node_modules/color-convert removed
node_modules/aws-cdk-lib/node_modules/color-name removed
node_modules/aws-cdk-lib/node_modules/concat-map removed
node_modules/aws-cdk-lib/node_modules/emoji-regex removed
node_modules/aws-cdk-lib/node_modules/fast-deep-equal removed
node_modules/aws-cdk-lib/node_modules/fast-uri removed
node_modules/aws-cdk-lib/node_modules/fs-extra 11.3.0 -> 11.3.5
node_modules/aws-cdk-lib/node_modules/is-fullwidth-code-point removed
node_modules/aws-cdk-lib/node_modules/json-schema-traverse removed
node_modules/aws-cdk-lib/node_modules/jsonfile 6.1.0 -> 6.2.1
node_modules/aws-cdk-lib/node_modules/lodash.truncate removed
node_modules/aws-cdk-lib/node_modules/minimatch 3.1.2 -> 10.2.5
node_modules/aws-cdk-lib/node_modules/require-from-string removed
node_modules/aws-cdk-lib/node_modules/semver 7.7.2 -> 7.8.1
node_modules/aws-cdk-lib/node_modules/slice-ansi removed
node_modules/aws-cdk-lib/node_modules/string-width removed
node_modules/aws-cdk-lib/node_modules/strip-ansi removed
node_modules/aws-cdk-lib/node_modules/table removed
node_modules/aws-cdk-lib/node_modules/yaml 1.10.2 -> 1.10.3
node_modules/balanced-match removed
node_modules/bowser 2.11.0 -> 2.14.1
node_modules/brace-expansion removed
node_modules/constructs 10.4.2 -> 10.7.0
node_modules/fast-xml-parser removed
node_modules/filelist/node_modules/brace-expansion 2.0.2 -> 2.1.2
node_modules/filelist/node_modules/minimatch 5.1.6 -> 5.1.9
node_modules/minimatch 3.1.2 -> 3.1.5
node_modules/strnum removed
node_modules/uuid removed
node_modules/@aws-sdk/credential-provider-login added
node_modules/@aws-sdk/signature-v4-multi-region added
node_modules/@aws/lambda-invoke-store added
node_modules/aws-cdk-lib/node_modules/@aws-cdk/cloud-assembly-api added
node_modules/filelist/node_modules/balanced-match added
node_modules/minimatch/node_modules/balanced-match added
node_modules/minimatch/node_modules/brace-expansion added

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Closed by Aikido: a new AutoFix has been created → #48

@aikido-autofix aikido-autofix Bot closed this Jul 22, 2026
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aikido-autofix Bot deleted the fix/aikido-security-update-packages-71372232-ggd5 branch July 22, 2026 23:41
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