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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sensiolabs | Symfony | >= 6.1.0, < 6.4.41 |
Related Weaknesses (CWE)
References
- https://github.com/symfony/symfony/commit/069a70f9f26e61e9de3b7f9a864a86ed24b36bPatch
- https://github.com/symfony/symfony/releases/tag/v6.4.41ProductRelease Notes
- https://github.com/symfony/symfony/releases/tag/v7.4.13ProductRelease Notes
- https://github.com/symfony/symfony/releases/tag/v8.0.13ProductRelease Notes
- https://github.com/symfony/symfony/security/advisories/GHSA-x5qj-865h-mgvmPatchVendor Advisory
FAQ
What is CVE-2026-48761?
CVE-2026-48761 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 U...
How severe is CVE-2026-48761?
CVE-2026-48761 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48761?
Check the references section above for vendor advisories and patch information. Affected products include: Sensiolabs Symfony.