Vulnerability Details CVE-2026-69152
The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.18, 2.1.4, 3.0.6, and 5.0.9, expand() does not apply maxLength while constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memory or block the event loop. The fix for CVE-2026-14257 is bypassed by the vulnerability. This issue is fixed in versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9.
Exploit prediction scoring system (EPSS) score
CVSS Severity
CVSS v3 Score 7.5
References
- https://github.com/juliangruber/brace-expansion/commit/139d015104e71433ad52a41d19467c48ecbb2c7d
- https://github.com/juliangruber/brace-expansion/commit/1e30c930238d7162802d88a94189182def178dac
- https://github.com/juliangruber/brace-expansion/commit/688a99eeaab02627c2b89ba8ba4821fecfa659cf
- https://github.com/juliangruber/brace-expansion/commit/cb4b9e47cc2ec777c14b2b4492fb431a56f6a031
- https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-rgw5-rvv9-x895
- https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-rgw5-rvv9-x895