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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-45077 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-B 8.3 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4 GitHub, Inc.
https://github.com/symfony/symfony/releases/tag/v5.4.52 GitHub, Inc.
https://github.com/symfony/symfony/releases/tag/v6.4.40 GitHub, Inc.
https://github.com/symfony/symfony/releases/tag/v7.4.12 GitHub, Inc.
https://github.com/symfony/symfony/releases/tag/v8.0.12 GitHub, Inc.
https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-502 Deserialization of Untrusted Data GitHub, Inc.  
CWE-668 Exposure of Resource to Wrong Sphere GitHub, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-45077
NVD Published Date:
07/14/2026
NVD Last Modified:
07/14/2026
Source:
GitHub, Inc.