[MEDIUM] CVE-2026-48761: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes on <object>, <applet>, <iframe>, <img> and the URL Inside <meta http-equiv="refresh"> content

PKSA-qpkt-z1gq-qf6m CVE-2026-48761 GHSA-x5qj-865h-mgvm

Affected package: symfony/symfony

Affected version: >=6.1.0,<6.2.0|>=6.2.0,<6.3.0|>=6.3.0,<6.4.0|>=6.4.0,<6.4.41|>=7.0.0,<7.1.0|>=7.1.0,<7.2.0|>=7.2.0,<7.3.0|>=7.3.0,<7.4.0|>=7.4.0,<7.4.13|>=8.0.0,<8.0.13

Reported by:
GitHub, FriendsOfPHP/security-advisories