CVE-2026-48761
Fixed in a distro release EPSS <1%CVSS 5.3
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.
Products: symfony, symfony html-sanitizer
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Packagist | symfony/html-sanitizer | 6.4.41 |
| Packagist | symfony/html-sanitizer | 7.4.13 |
| Packagist | symfony/html-sanitizer | 8.0.13 |
| Packagist | symfony/symfony | 6.4.41 |
| Packagist | symfony/symfony | 7.4.13 |
| Packagist | symfony/symfony | 8.0.13 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian:13 | symfony | 6.4.41+dfsg-0+deb13u1 |
| Debian:14 | symfony | 7.4.13+dfsg-1 |
| Ubuntu:16.04:LTS | symfony | no fix |
| Ubuntu:25.10 | symfony | no fix |
| Ubuntu:26.04:LTS | symfony | no fix |
| Ubuntu:26.10 | symfony | no fix |
| Ubuntu:Pro:18.04:LTS | symfony | no fix |
| Ubuntu:Pro:20.04:LTS | symfony | no fix |
| Ubuntu:Pro:22.04:LTS | symfony | no fix |
| Ubuntu:Pro:24.04:LTS | symfony | no fix |