CVE-2026-45756

Symfony: JsonPath Evaluates Attacker-Controlled Regular Expressions in match()/search() Without Limits — ReDoS

State: Published
Severity: 8.2 High
Published: Jul 14, 2026
Updated: Jul 21, 2026
Reserved: May 13, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.2 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-400 Uncontrolled Resource Consumption
CWE-1333 Inefficient Regular Expression Complexity

Affected Products

Product	Versions
symfonysymfony	>= 7.3.0-BETA1, < 7.4.12Affected >= 8.0.0-BETA1, < 8.0.12Affected
json-pathsymfony	>= 7.3.0-BETA1, < 7.4.12Affected >= 8.0.0-BETA1, < 8.0.12Affected

References

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