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CVE-2026-45756
Published:July 14, 2026
Updated:July 21, 2026
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.3.0-BETA1 until 7.4.12 and 8.0.12, the JsonPath component compiles attacker-controlled match() and search() filter patterns directly into preg_match() without a length cap, i-regexp restriction, or bounded backtracking, allowing catastrophic-backtracking expressions to pin worker CPU and cause denial of service. This issue is fixed in versions 7.4.12 and 8.0.12.
Affected Packages
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v7.3.0 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
symfony/symfony (PHP):
Affected version(s) >=v8.0.0 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
symfony/json-path (PHP):
Affected version(s) >=v8.0.0 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
symfony/json-path (PHP):
Affected version(s) >=v7.3.0 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
symfony/json-path (PHP):
Affected version(s) >=v7.3.0 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
symfony/symfony (PHP):
Affected version(s) >=v7.3.0 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
symfony/json-path (PHP):
Affected version(s) >=v8.0.0 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
UNREPORTED
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
Inefficient Regular Expression Complexity
EPSS
Base Score:
0.57