{"id":"CVE-2026-48761","aliases":["GHSA-x5qj-865h-mgvm"],"url":"https://o3.security/vulnerability/CVE-2026-48761","summary":"Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes on <object>, <applet>, <iframe>, <img> and the URL Inside <meta http-equiv=\"refresh\"> content","details":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlAttributeSanitizer::getSupportedAttributes() omitted URL-bearing attributes on <object>, <applet>, <iframe>, and <img>, and <meta http-equiv=\"refresh\"> URLs inside content bypassed URL sanitization, allowing explicitly enabled elements or attributes to pass javascript: and similar payloads into sanitized output. This issue is fixed in versions 6.4.41, 7.4.13, and 8.0.13.","published":"2026-07-14T19:21:26.582Z","modified":"2026-08-12T03:51:32.810432402Z","cvss":null,"epss":{"score":0.00345,"percentile":0.27893,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"symfony/html-sanitizer","fixedVersion":"6.4.41"},{"ecosystem":"Packagist","name":"symfony/html-sanitizer","fixedVersion":"7.4.13"},{"ecosystem":"Packagist","name":"symfony/html-sanitizer","fixedVersion":"8.0.13"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"6.4.41"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"7.4.13"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"8.0.13"}],"fix":{"url":"https://github.com/symfony/symfony/commit/069a70f9f26e61e9de3b7f9a864a86ed24b36bd0","label":"symfony/symfony@069a70f"},"references":[{"type":"WEB","url":"https://github.com/symfony/symfony/releases/tag/v6.4.41"},{"type":"WEB","url":"https://github.com/symfony/symfony/releases/tag/v7.4.13"},{"type":"WEB","url":"https://github.com/symfony/symfony/releases/tag/v8.0.13"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48761.json"},{"type":"ADVISORY","url":"https://github.com/symfony/symfony/security/advisories/GHSA-x5qj-865h-mgvm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48761"},{"type":"FIX","url":"https://github.com/symfony/symfony/commit/069a70f9f26e61e9de3b7f9a864a86ed24b36bd0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:32.810432402Z"}}