Resource exhaustion in Darylldoyle Svg-Sanitizer
CVE-2026-121444
svg-sanitizer from 0.11.0 before 1.1.0 contains an algorithmic complexity denial of service vulnerability in hasInfiniteLoop() and countUse() of the use reference-graph analysis. Attackers can upload a small layered SVG with 15 levels of fanned-out use elements, forcing exponential path enumeration that pins PHP workers for hours.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/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-hrwm-vcc9-hcm4 (vendor-advisory)
- www.vulncheck.com/advisories/svg-sanitizer-0.11.0-before-1.1.0-algorithmic-comp… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121444?
- CVE-2026-121444 is a high-severity vulnerability in Darylldoyle Svg-Sanitizer, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-11-03.
- How severe is CVE-2026-121444?
- High severity. CVSS v3 base score is 7.5 out of 10.