CVE-2026-69152
brace-expansion: DoS via unbounded intermediate arrays, bypassing the CVE-2026-14257 mitigation
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 CWE-770 |
| Vendor | juliangruber |
| Product | brace-expansion |
| Published | Aug 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
juliangruber / brace-expansion
< 1.1.18 >= 2.0.0, < 2.1.4 >= 3.0.0, < 3.0.6 >= 4.0.0, < 5.0.9
References
github.com: https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-rgw5-rvv9-x895 github.com: https://github.com/juliangruber/brace-expansion/commit/139d015104e71433ad52a41d19467c48ecbb2c7d github.com: https://github.com/juliangruber/brace-expansion/commit/1e30c930238d7162802d88a94189182def178dac github.com: https://github.com/juliangruber/brace-expansion/commit/688a99eeaab02627c2b89ba8ba4821fecfa659cf github.com: https://github.com/juliangruber/brace-expansion/commit/cb4b9e47cc2ec777c14b2b4492fb431a56f6a031