CVE-2026-102277

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.21, 2.1.7, 3.0.9, and 5.0.12, the expand function handles untrusted {a},b}-shaped patterns with many trailing closing braces by restarting its scan once for each trailing closing brace. The successive full-input rescans with linear working-string growth cause quadratic CPU time and memory pressure that can block the Node.js event loop. The process eventually recovers, making the impact a recoverable CPU denial of service. This issue is fixed in versions 1.1.21, 2.1.7, 3.0.9, and 5.0.12.

• CWE-400
• CWE-407

• https://github.com/juliangruber/brace-expansion/commit/33a5ef17b8d800bbfa8c52b14c39043b6aac1a96
• https://github.com/juliangruber/brace-expansion/commit/bdff773f98e5988616b7039cc9b508df5d640b22
• https://github.com/juliangruber/brace-expansion/commit/c55e67d8d8b1c56a2474afff15c2891166b2d364
• https://github.com/juliangruber/brace-expansion/commit/ffdfa3e3806bed17c0874b8f1439b084de354a7e
• https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-q2hr-2g5m-vwhr

Published

Sep 28, 2026

Last Modified

Sep 28, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-102271PyJWT is a Python implementation of JSON Web Token standards…7.4
• CVE-2026-102272PyJWT is a Python implementation of JSON Web Token standards…7.4
• CVE-2026-102273PyJWT is a Python implementation of JSON Web Token standards…7.4
• CVE-2026-102274PyJWT is a Python implementation of JSON Web Token standards…5.9
• CVE-2026-102275PyJWT is a Python implementation of JSON Web Token standards…6.5
• CVE-2026-102276The brace-expansion library generates arbitrary strings cont…7.5
• CVE-2026-102278The brace-expansion library generates arbitrary strings cont…7.5
• CVE-2026-102279Laravel is a web application framework. Prior to 12.69.0 and…3.1
• CVE-2026-10228A vulnerability was found in raisulislamg4 student_managemen…3.5
• CVE-2026-10229A vulnerability was determined in Assimp up to 6.0.4. This a…5.3
• CVE-2026-1023Statistics Database System developed by Gotac has a Missing …8.7
• CVE-2026-10230A vulnerability was identified in Assimp up to 6.0.4. This i…5.3