Resource exhaustion in Juliangruber Brace-Expansion
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (51.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Juliangruber Brace-Expansion — versions < 1.1.18, >= 2.0.0, < 2.1.4, >= 3.0.0, < 3.0.6
Weakness classification (CWE)
References
- github.com/juliangruber/brace-expansion/commit/139d015104e71433ad52a41d19467c48… (Patch)
- github.com/juliangruber/brace-expansion/commit/1e30c930238d7162802d88a94189182d… (Patch)
- github.com/juliangruber/brace-expansion/commit/688a99eeaab02627c2b89ba8ba4821fe… (Patch)
- github.com/juliangruber/brace-expansion/commit/cb4b9e47cc2ec777c14b2b4492fb431a… (Patch)
- github.com/juliangruber/brace-expansion/security/advisories/GHSA-rgw5-rvv9-x895 (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-69152?
- CVE-2026-69152 is a high-severity vulnerability in Juliangruber Brace-Expansion, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-03.
- How severe is CVE-2026-69152?
- High severity. CVSS v3 base score is 7.5 out of 10.