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Fencer Vulns
high 7.5

CVE-2026-93687 json

braces through 3.0.3 Stack Overflow via Deeply Nested Patterns

published 2026-09-18 52 d ago modified 2026-11-05 4 d ago also GHSA-vfj7-8cjw-p6xm , EUVD-2026-82983

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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.

Patch / fix

  • terragrunt openSUSE Tumbleweed 1.2.1-1.1

opensuse advisories openSUSE-SU-2026:12352-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-93687 updated cvss 7.5

braces: braces: Denial of Service via Stack Overflow from Deeply Nested Patterns

  • Red Hat Hardened Images prometheus3.5 3.5.5-0.8.hum1
    affected: no fix planned “Will not fix”
  • Red Hat Hardened Images rust 1.98.1-1.hum1, llvm21 21.1.8-8.hum1, jaeger 2.20.0-0.11.hum1, swift-lang 6.4.0-0.4.hum1, dotnet8.0 8.0.130-0.1.hum1, grafana13.1 13.1.6-0.2.hum1, +6 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
25 d ago

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 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
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 4.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • micromatch braces

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.