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Fencer Vulns
medium 5.3

CVE-2018-1109 json

Regular Expression Denial of Service (ReDoS) in braces

published 2021-03-30 5 y ago modified 2026-06-17 4 mo ago also GHSA-cwfw-4gq5-mrqx , EUVD-2022-0569

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

A vulnerability was found in Braces versions 2.2.0 and above, prior to 2.3.1. Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) attacks.

Patch / fix

  • npm braces 2.3.1
  • n/a nodejs-braces 2.3.1

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-2018-1109 updated cvss 4.0

nodejs-braces: Regular Expression Denial of Service (ReDoS) in lib/parsers.js

  • Red Hat Quay v3 quay/quay-rhel8 v3.6.0-62
    fixed: vendor fix RHSA-2021:3917
  • Red Hat Quay v3 quay/clair-rhel8 v3.6.0-70, quay/quay-builder-rhel8 v3.6.0-44, quay/quay-operator-rhel8 v3.6.0-43, quay/quay-operator-bundle v3.6.0-48, quay/quay-bridge-operator-rhel8 v3.6.0-40, quay/quay-bridge-operator-bundle v3.6.0-35, +3 more Red Hat Mobile Application Platform 4 nodejs-braces Red Hat OpenShift Enterprise 3 nodejs-braces Red Hat Software Collections rh-nodejs4-nodejs-braces, rh-nodejs6-nodejs-braces, rh-nodejs8-nodejs-braces
    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

Exploit prediction

1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • snyk.io https://snyk.io/vuln/npm:braces:20180219 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected packages

ecosystem package affected fixed in
npm braces
>=2.2.0, <2.3.1
2.3.1

Affected products

  • n/a nodejs-braces

Classification

Weakness
  • CWE-185 Incorrect Regular Expression
  • CWE-400 Uncontrolled Resource Consumption

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.