CVE-2026-102278
The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.20, 2.1.6, 3.0.8, and 5.0.11, deeply nested brace groups cause expand_() to recurse once per nesting level at comma-member and single-set expansion sites, exhausting the native stack before output limits can apply and potentially terminating the Node.js process. expand_ performs uncontrolled recursion for nested brace alternatives and single-part sets. deeply nested brace groups supplied as an untrusted pattern. expand_ is affected. expand is affected. Comma members is affected. Single set is affected. native stack exhaustion during nested sub-expansion. process-terminating denial of service. This issue is fixed in versions 1.1.20, 2.1.6, 3.0.8, and 5.0.11.
- CVSS 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-400, CWE-674
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qhr7-859c-m2p7 | npm | brace-expansion | >=4.0.0 <5.0.11 | 5.0.11 |
| GHSA-qhr7-859c-m2p7 | npm | brace-expansion | >=3.0.0 <3.0.8 | 3.0.8 |
| GHSA-qhr7-859c-m2p7 | npm | brace-expansion | >=2.0.0 <2.1.6 | 2.1.6 |
| GHSA-qhr7-859c-m2p7 | npm | brace-expansion | <1.1.20 | 1.1.20 |
References
- https://github.com/juliangruber/brace-expansion/commit/1efee7c397c191da6287a78ec19512476a966a7b
- https://github.com/juliangruber/brace-expansion/commit/935d78f32f335b2ff76578e5c5e877d31ae9888c
- https://github.com/juliangruber/brace-expansion/commit/de84f144e9816f30e25fc8179e2e1249ab6df0db
- https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-qhr7-859c-m2p7