CVE-2026-45077

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the server:log listener (Symfony\Bridge\Monolog\Command\ServerLogCommand) binds to 0.0.0.0:9911 by default and processes each received frame with unserialize(base64_decode($message)) without authentication, integrity checks, or an allowed_classes allowlist, allowing any reachable host to submit attacker-chosen serialized PHP payloads that can crash the listener and may trigger object-injection gadget effects. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

History

15 Jul 2026, 15:35

Type Values Removed Values Added
First Time Sensiolabs symfony
Sensiolabs
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 8.6
References () https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4 - () https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4 - Patch
References () https://github.com/symfony/symfony/releases/tag/v5.4.52 - () https://github.com/symfony/symfony/releases/tag/v5.4.52 - Product, Release Notes
References () https://github.com/symfony/symfony/releases/tag/v6.4.40 - () https://github.com/symfony/symfony/releases/tag/v6.4.40 - Product, Release Notes
References () https://github.com/symfony/symfony/releases/tag/v7.4.12 - () https://github.com/symfony/symfony/releases/tag/v7.4.12 - Product, Release Notes
References () https://github.com/symfony/symfony/releases/tag/v8.0.12 - () https://github.com/symfony/symfony/releases/tag/v8.0.12 - Product, Release Notes
References () https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v - () https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v - Patch, Vendor Advisory
CPE cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

14 Jul 2026, 18:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-07-14 18:17

Updated : 2026-07-15 15:35


NVD link : CVE-2026-45077

Mitre link : CVE-2026-45077

CVE.ORG link : CVE-2026-45077


JSON object : View

Products Affected

sensiolabs

  • symfony
CWE
CWE-502

Deserialization of Untrusted Data

CWE-668

Exposure of Resource to Wrong Sphere