CVE-2026-48761
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
6.1 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Vulnerability Description
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.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-79
Source
GitHub
Vendor
composer
Product
symfony/html-sanitizer
External References
- https://github.com/symfony/symfony/security/advisories/GHSA-x5qj-865h-mgvm
- https://github.com/symfony/symfony/commit/069a70f9f26e61e9de3b7f9a864a86ed24b36bd0
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/html-sanitizer/CVE-2026-48761.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-48761.yaml
- https://symfony.com/cve-2026-48761
- https://github.com/advisories/GHSA-x5qj-865h-mgvm
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