Vulnerability in Darylldoyle Svg-Sanitizer
CVE-2026-121445
darylldoyle svg-sanitizer from 1.0.0 before 1.1.0 contains a regular expression denial of service vulnerability in the image-set pattern of stripRemoteCssTokens() when removeRemoteReferences is enabled. Attackers can submit SVGs with many unclosed image-set tokens to exhaust CPU, or trigger PCRE limits causing sanitize() to throw a TypeError and leave unsanitized content.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-94x8-pw3c-6qcq (vendor-advisory)
- www.vulncheck.com/advisories/svg-sanitizer-1.0.0-before-1.1.0-redos-and-fail-op… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121445?
- CVE-2026-121445 is a medium-severity vulnerability in Darylldoyle Svg-Sanitizer, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.9/10. Published 2026-11-03.
- How severe is CVE-2026-121445?
- Medium severity. CVSS v3 base score is 5.9 out of 10.