{"id":"CVE-2026-121444","title":"svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference Graph","summary":"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…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-400"],"vendor":"darylldoyle","product":"svg-sanitizer","affected":["svg-sanitizer >= 0.11.0 < 1.1.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-03T17:51:45.914713Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T18:28:41.671Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121444","references":[{"url":"https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-hrwm-vcc9-hcm4","label":"GitHub Security Advisory (GHSA-hrwm-vcc9-hcm4)"},{"url":"https://www.vulncheck.com/advisories/svg-sanitizer-0.11.0-before-1.1.0-algorithmic-complexity-dos-via-use-reference-graph","label":"VulnCheck Advisory: svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference Graph"}],"tags":["cve.org"],"epss":0.00417,"epssPercentile":0.36249,"ingestedAt":"2026-11-05T20:33:06.354Z","slug":"CVE-2026-121444","body":"## Overview\n\nsvg-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.\n\n## Affected\n\n- `svg-sanitizer >= 0.11.0 < 1.1.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}