high7.5
CVE-2026-69152
brace-expansion: DoS via unbounded intermediate arrays, bypassing the CVE-2026-14257 mitigation
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | brace-expansion | < 1.1.18 | 1.1.18 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Juliangruber | Brace-Expansion | before 1.1.18 from 2.0.0 before 2.1.4 from 3.0.0 before 3.0.6 from 4.0.0 before 5.0.9 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-rgw5-rvv9-x895
- https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-rgw5-rvv9-x895
- 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://nvd.nist.gov/vuln/detail/CVE-2026-69152