CVE-2026-48784
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 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate() used strtr() dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters to generate URLs that collapse to a different path under RFC 3986 normalization. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.
Affected Packages
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v7.4.0 <v7.4.13Fix Suggestion:
Update to version v7.4.13https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v6.4.0 <v6.4.41Fix Suggestion:
Update to version v6.4.41https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.0.13Fix Suggestion:
Update to version v8.0.13https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v2.0.0 <v5.4.53Fix Suggestion:
Update to version v5.4.53symfony/symfony (PHP):
Affected version(s) >=v6.0.0 <v6.4.41Fix Suggestion:
Update to version v6.4.41symfony/routing (PHP):
Affected version(s) >=v2.0.0 <v5.4.53Fix Suggestion:
Update to version v5.4.53symfony/routing (PHP):
Affected version(s) >=v6.0.0 <v6.4.41Fix Suggestion:
Update to version v6.4.41symfony/symfony (PHP):
Affected version(s) >=v7.0.0 <v7.4.13Fix Suggestion:
Update to version v7.4.13symfony/routing (PHP):
Affected version(s) >=v7.0.0 <v7.4.13Fix Suggestion:
Update to version v7.4.13symfony/routing (PHP):
Affected version(s) >=v8.0.0 <v8.0.13Fix Suggestion:
Update to version v8.0.13symfony/symfony (PHP):
Affected version(s) >=dev-add-security-skills <v5.4.53Fix Suggestion:
Update to version v5.4.53symfony/symfony (PHP):
Affected version(s) >=v8.0.0 <v8.0.13Fix Suggestion:
Update to version v8.0.13Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
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
EPSS
Base Score:
0.42