CVE-2026-45756
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Sensiolabs Symfony
PublishedJul 14, 2026
First seenJul 14, 2026
How to fix
Update
- sensiolabs symfony7.4.12, 8.0.12 or later
- symfony/json-path7.4.12, 8.0.12 or later
- symfony/symfony7.4.12, 8.0.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sensiolabs symfony | 7.3.0 ≤ v < 7.4.12, 8.0.0 ≤ v < 8.0.12 | 7.4.12, 8.0.12 |
| symfony/json-pathPackagist | 7.3.0 ≤ v < 7.4.12, 8.0.0 ≤ v < 8.0.12 | 7.4.12, 8.0.12 |
| symfony/symfonyPackagist | 7.3.0 ≤ v < 7.4.12, 8.0.0 ≤ v < 8.0.12 | 7.4.12, 8.0.12 |
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