{"id":"CVE-2026-40301","state":"PUBLISHED","title":"rhukster/dom-sanitizer: SVG <style> tag allows CSS injection via unfiltered url() and @import directives","description":"DOMSanitizer is a DOM/SVG/MathML Sanitizer for PHP 7.3+. Prior to version 1.0.10, DOMSanitizer::sanitize() allows <style> elements in SVG content but never inspects their text content. CSS url() references and @import rules pass through unfiltered, causing the browser to issue HTTP requests to attacker-controlled hosts when the sanitized SVG is rendered. Version 1.0.10 fixes the issue.","publishedAt":"2026-04-17T20:51:37.226Z","updatedAt":"2026-04-20T14:57:39.192Z","severity":{"score":4.7,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["rhukster dom-sanitizer"],"affected":[{"vendor":"rhukster","product":"dom-sanitizer","versions":[{"version":"< 1.0.10","status":"affected"}]}],"references":["https://github.com/rhukster/dom-sanitizer/security/advisories/GHSA-93vf-569f-22cq","https://github.com/rhukster/dom-sanitizer/commit/49a98046b708a4c92f754f5b0ef1720bb85142e2","https://github.com/rhukster/dom-sanitizer/releases/tag/1.0.10"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40301.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40301","state":"PUBLISHED","datePublished":"2026-04-17T20:51:37.226Z","dateUpdated":"2026-04-20T14:57:39.192Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-10T20:22:44.036Z"},"containers":{"cna":{"title":"rhukster/dom-sanitizer: SVG <style> tag allows CSS injection via unfiltered url() and @import directives","descriptions":[{"lang":"en","value":"DOMSanitizer is a DOM/SVG/MathML Sanitizer for PHP 7.3+. Prior to version 1.0.10, DOMSanitizer::sanitize() allows <style> elements in SVG content but never inspects their text content. CSS url() references and @import rules pass through unfiltered, causing the browser to issue HTTP requests to attacker-controlled hosts when the sanitized SVG is rendered. Version 1.0.10 fixes the issue."}],"affected":[{"vendor":"rhukster","product":"dom-sanitizer","versions":[{"version":"< 1.0.10","status":"affected"}]}],"references":[{"url":"https://github.com/rhukster/dom-sanitizer/security/advisories/GHSA-93vf-569f-22cq","name":"https://github.com/rhukster/dom-sanitizer/security/advisories/GHSA-93vf-569f-22cq","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/rhukster/dom-sanitizer/commit/49a98046b708a4c92f754f5b0ef1720bb85142e2","name":"https://github.com/rhukster/dom-sanitizer/commit/49a98046b708a4c92f754f5b0ef1720bb85142e2","tags":["x_refsource_MISC"]},{"url":"https://github.com/rhukster/dom-sanitizer/releases/tag/1.0.10","name":"https://github.com/rhukster/dom-sanitizer/releases/tag/1.0.10","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.7,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-17T20:51:37.226Z"},"source":{"advisory":"GHSA-93vf-569f-22cq","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-20T14:42:31.756128Z","id":"CVE-2026-40301","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-20T14:57:39.192Z"}}]}}}