Vulnerability DatabaseCVE-2026-48761
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CVE-2026-48761
Published:July 14, 2026
Updated:July 20, 2026
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.
Affected Packages
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v7.0.0-BETA1 <v7.4.13
Fix Suggestion:
Update to version v7.4.13
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v8.0.0-BETA1 <v8.0.13
Fix Suggestion:
Update to version v8.0.13
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v6.1.0-BETA1 <v6.4.41
Fix Suggestion:
Update to version v6.4.41
symfony/html-sanitizer (PHP):
Affected version(s) >=v6.1.0 <v6.4.41
Fix Suggestion:
Update to version v6.4.41
symfony/html-sanitizer (PHP):
Affected version(s) >=v7.0.0 <v7.4.13
Fix Suggestion:
Update to version v7.4.13
symfony/symfony (PHP):
Affected version(s) >=v8.0.0 <v8.0.13
Fix Suggestion:
Update to version v8.0.13
symfony/html-sanitizer (PHP):
Affected version(s) >=v8.0.0 <v8.0.13
Fix Suggestion:
Update to version v8.0.13
symfony/symfony (PHP):
Affected version(s) >=v6.1.0 <v6.4.41
Fix Suggestion:
Update to version v6.4.41
symfony/symfony (PHP):
Affected version(s) >=v7.0.0 <v7.4.13
Fix Suggestion:
Update to version v7.4.13
Related Resources (9)
https://github.com/symfony/symfony/security/advisories/GHSA-x5qj-865h-mgvm
https://github.com/symfony/symfony/releases/tag/v6.4.41
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-48761.yaml
https://github.com/symfony/symfony/releases/tag/v7.4.13
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/html-sanitizer/CVE-2026-48761.yaml
https://github.com/symfony/symfony
https://github.com/symfony/symfony/releases/tag/v8.0.13
https://github.com/symfony/symfony/commit/069a70f9f26e61e9de3b7f9a864a86ed24b36bd0
https://symfony.com/cve-2026-48761
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
Incomplete Comparison with Missing Factors
CWE-1023
EPSS
Base Score:
0.27