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OpenAdvisories
High · 8.2 CVE-2026-45756 EUVD-2026-44340GHSA-8v8v-g73j-492j

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

Published Jul 14, 2026 · Updated Jul 21, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
symfony symfony >= 7.3.0-BETA1, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12 —
symfony json-path >= 7.3.0-BETA1, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 symfony 7.4.12+dfsg-1 —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 symfony No fix yet —
Ubuntu 26.04 LTS symfony No fix yet —
Ubuntu 25.10 symfony No fix yet —
Ubuntu 16.04 LTS symfony No fix yet —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS symfony No fix yet —
Ubuntu Pro 22.04 LTS symfony No fix yet —
Ubuntu Pro 20.04 LTS symfony No fix yet —
Ubuntu Pro 18.04 LTS symfony No fix yet —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist symfony/json-path >= 7.3.0, < 7.4.12 7.4.12 GHSA-8v8v-g73j-492j
Packagist symfony/json-path >= 8.0.0, < 8.0.12 8.0.12 GHSA-8v8v-g73j-492j
Packagist symfony/symfony >= 7.3.0, < 7.4.12 7.4.12 GHSA-8v8v-g73j-492j
Packagist symfony/symfony >= 8.0.0, < 8.0.12 8.0.12 GHSA-8v8v-g73j-492j

References