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.
References
| Link | Resource |
|---|---|
| https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4 | Patch |
| https://github.com/symfony/symfony/releases/tag/v5.4.52 | Product Release Notes |
| https://github.com/symfony/symfony/releases/tag/v6.4.40 | Product Release Notes |
| https://github.com/symfony/symfony/releases/tag/v7.4.12 | Product Release Notes |
| https://github.com/symfony/symfony/releases/tag/v8.0.12 | Product Release Notes |
| https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
15 Jul 2026, 15:35
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Sensiolabs symfony
Sensiolabs |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.6 |
| References | () https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4 - Patch | |
| References | () https://github.com/symfony/symfony/releases/tag/v5.4.52 - Product, Release Notes | |
| References | () https://github.com/symfony/symfony/releases/tag/v6.4.40 - Product, Release Notes | |
| References | () https://github.com/symfony/symfony/releases/tag/v7.4.12 - Product, Release Notes | |
| References | () 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 - 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
