CVE-2026-102277Medium· 5.3▾ SunlitThe brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.21, 2.1.7, 3.0.9, and 5.0.12, the expand function handles untrusted {a},b}-shaped patterns with many trailing closing braces by r…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 29.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.4%
The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.21, 2.1.7, 3.0.9, and 5.0.12, the expand function handles untrusted {a},b}-shaped patterns with many trailing closing braces by restarting its scan once for each trailing closing brace. The successive full-input rescans with linear working-string growth cause quadratic CPU time and memory pressure that can block the Node.js event loop. The process eventually recovers, making the impact a recoverable CPU denial of service. This issue is fixed in versions 1.1.21, 2.1.7, 3.0.9, and 5.0.12.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
brace-expansion >= 4.0.0, < 5.0.12brace-expansion >= 3.0.0, < 3.0.9brace-expansion >= 2.0.0, < 2.1.7brace-expansion < 1.1.21Patched in:
brace-expansion 5.0.12brace-expansion 3.0.9brace-expansion 2.1.7brace-expansion 1.1.21Source: https://github.com/advisories/GHSA-q2hr-2g5m-vwhr
Connected by shared product, vendor, weakness, or advisory.
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