CVE-2026-45065
Published:July 14, 2026
Updated:July 16, 2026
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, UrlGenerator validates route parameters against a pattern built as ^ plus the raw requirement plus $; with ungrouped alternations, middle alternatives match as unanchored substrings, allowing a value such as //evil.com to satisfy a common locale requirement and generate a protocol-relative off-site URL. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Affected Packages
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v6.4.0 <v6.4.38Fix Suggestion:
Update to version v6.4.38https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.0.9Fix Suggestion:
Update to version v8.0.9https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v7.4.0 <v7.4.9Fix Suggestion:
Update to version v7.4.9https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v2.0.0BETA1 <v5.4.52Fix Suggestion:
Update to version v5.4.52symfony/symfony (PHP):
Affected version(s) >=v7.0.0 <v7.4.12Fix Suggestion:
Update to version v7.4.12symfony/routing (PHP):
Affected version(s) >=v7.0.0 <v7.4.12Fix Suggestion:
Update to version v7.4.12symfony/symfony (PHP):
Affected version(s) >=v6.0.0 <v6.4.40Fix Suggestion:
Update to version v6.4.40symfony/symfony (PHP):
Affected version(s) >=v8.0.0 <v8.0.12Fix Suggestion:
Update to version v8.0.12symfony/symfony (PHP):
Affected version(s) >=dev-add-security-skills <v5.4.52Fix Suggestion:
Update to version v5.4.52symfony/routing (PHP):
Affected version(s) >=v6.0.0 <v6.4.40Fix Suggestion:
Update to version v6.4.40symfony/routing (PHP):
Affected version(s) >=v8.0.0 <v8.0.12Fix Suggestion:
Update to version v8.0.12symfony/routing (PHP):
Affected version(s) >=v2.0.0 <v5.4.52Fix Suggestion:
Update to version v5.4.52Related Resources (10)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
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)
EPSS
Base Score:
0.41