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)
EPSS: 0.006 (48.2th percentile) — read the EPSS interpretation.
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.
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
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM, 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.