CVE-2026-102277
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| juliangruber | brace-expansion | >= 4.0.0, < 5.0.12 | affected |
| juliangruber | brace-expansion | >= 3.0.0, < 3.0.9 | affected |
| juliangruber | brace-expansion | >= 2.0.0, < 2.1.7 | affected |
| juliangruber | brace-expansion | < 1.1.21 | affected |
Weaknesses
- CWE-400: CWE-400: Uncontrolled Resource Consumption
- CWE-407: CWE-407: Inefficient Algorithmic Complexity
References
- https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-q2hr-2g5m-vwhr
- 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
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