SB2026110202 - Uncontrolled Recursion in braces
Published: November 2, 2026
Security Bulletin ID
SB2026110202
CSH Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Uncontrolled Recursion (CVE-ID: CVE-2026-93687)
CWE-ID: CWE-674 - Uncontrolled Recursion
CVSSv4: 8.7 [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]
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the recursive AST walkers that lack depth guards. A remote attacker 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.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.
References
- https://github.com/micromatch/braces
- https://github.com/micromatch/braces/blob/3.0.3/lib/compile.js#L49-L53
- https://github.com/micromatch/braces/blob/3.0.3/lib/expand.js#L102-L105
- https://github.com/micromatch/braces/blob/3.0.3/lib/parse.js#L38-L40
- https://github.com/micromatch/braces/issues/70
- https://www.vulncheck.com/advisories/braces-through-3.0.3-stack-overflow-via-deeply-nested-patterns
- https://github.com/micromatch/braces/issues/73#issuecomment-5996574974