# CVE-2026-93687: braces through 3.0.3 Stack Overflow via Deeply Nested Patterns

Status: published. Published: 2026-09-18. Updated: 2026-11-05.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- micromatch / braces (braces): ≥ 0; ≤ 3.0.3 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.7 (high); 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; source: CNA: VulnCheck

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.76% as of 2026-11-05; percentile 55.33%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-674

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/micromatch/braces/issues/70 (CNA: VulnCheck; issue-tracking)

- https://github.com/micromatch/braces (CNA: VulnCheck; product)

- https://github.com/micromatch/braces/blob/3.0.3/lib/compile.js#L49-L53 (CNA: VulnCheck; technical-description)

- https://github.com/micromatch/braces/blob/3.0.3/lib/expand.js#L102-L105 (CNA: VulnCheck; technical-description)

- https://github.com/micromatch/braces/blob/3.0.3/lib/parse.js#L38-L40 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/braces-through-3.0.3-stack-overflow-via-deeply-nested-patterns (CNA: VulnCheck; third-party-advisory)

- https://github.com/micromatch/braces/issues/73#issuecomment-5996574974 (ADP: CVE)

- https://github.com/advisories/ghsa-vfj7-8cjw-p6xm (ADP: CVE)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-93687; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-93687; retrieved 2026-11-05; source updated Not reported

Revision: 561e9e17ceca126c719b675e0cc63239037b625e29384d160d11d216be7061f8

Canonical: https://y2.dev/cve/CVE-2026-93687

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