CVE-2026-93687: micromatch braces · Uncontrolled Recursion
Affects micromatch bracesSource CVE Database V5
Not known to be exploited · CVSS 8.7 High.
Data as of 2 Nov 2026, 22:58 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| micromatchbraces | Affected
| Fixed in– |
npmbracespkg:npm/bracesOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, avoid processing untrusted input containing deeply nested brace patterns to mitigate the risk of stack overflow and process termination.
Description
### Withdrawn Advisory This advisory has been withdrawn because it's not a practically exploitable vulnerability. This link is maintained to preserve external references. ### Original Description 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.
References
- github.com/micromatch/braces/issues/70 (opens in a new tab)
- github.com/micromatch/braces (opens in a new tab)
- github.com/micromatch/braces/blob/3.0.3/lib/compile.js (opens in a new tab)
- github.com/micromatch/braces/blob/3.0.3/lib/expand.js (opens in a new tab)
- github.com/micromatch/braces/blob/3.0.3/lib/parse.js (opens in a new tab)
- vulncheck.com/advisories/braces-through-3.0.3-stack-overflow-via-deeply-nested-patterns (opens in a new tab)
- github.com/micromatch/braces/issues/73 (opens in a new tab)