CVE-2026-93687: high-severity vulnerability in micromatch braces
braces through 3.0.3 Stack Overflow via Deeply Nested Patterns
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.7epss 0.8%
from disclosure to weapon6 days
Published on NVDSep 18
1st PoC+6d
braces through 3.0.3 contains a stack overflow vulnerability in the recursive AST walkers that lack depth guards. Attackers can supply deeply nested brace patterns under the character limit to exhaust the call stack and terminate the Node.js process with an uncaught RangeError.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
micromatch · bracespublic PoCs found — 4
githubgithub.com/pillarsdotnet/node-braces★ 0githubgithub.com/BernydotJar/braces-security-backport★ 0githubgithub.com/canmenzo/cve-2026-93687-braces★ 0githubgithub.com/scastillo-jp/braces-fork★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — micromatch braces
In the same product, most dangerous first.
References
https://github.com/advisories/ghsa-vfj7-8cjw-p6xmhttps://github.com/micromatch/braceshttps://github.com/micromatch/braces/blob/3.0.3/lib/compile.js#L49-L53https://github.com/micromatch/braces/blob/3.0.3/lib/expand.js#L102-L105https://github.com/micromatch/braces/blob/3.0.3/lib/parse.js#L38-L40https://github.com/micromatch/braces/issues/70https://github.com/micromatch/braces/issues/73#issuecomment-5996574974https://www.vulncheck.com/advisories/braces-through-3.0.3-stack-overflow-via-deeply-nested-patterns