Vulnerability Description
svg-sanitizer from 0.5.3 before 1.1.0 contains a denial of service vulnerability in Sanitizer::sanitize() that repeatedly rescans the whole input while stripping PHP tags. Unauthenticated attackers can upload SVGs with many overlapping PHP tag openers and closers, forcing quadratic preg_replace passes that exhaust worker CPU for minutes.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/darylldoyle/svg-sanitizer/commit/9ba9001493f5da737759303f13bd
- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-2v7c-jx29-
- https://www.vulncheck.com/advisories/svg-sanitizer-before-1.1.0-quadratic-cpu-ex
FAQ
What is CVE-2026-117540?
CVE-2026-117540 is a vulnerability with a CVSS score of 7.5 (HIGH). svg-sanitizer from 0.5.3 before 1.1.0 contains a denial of service vulnerability in Sanitizer::sanitize() that repeatedly rescans the whole input while stripping PHP tags. Unauthenticated attackers ca...
How severe is CVE-2026-117540?
CVE-2026-117540 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-117540?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.