SEPTEMBER 13, 2026
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Case File

CVE-2026-45077

HIGH · CVSS 8.6 EPSS 0.45% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-14 · Last synced 2026-08-13

CyberRota Analysis

AI-Generated

The Symfony PHP framework versions prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12 are vulnerable due to the server:log listener binding to 0.0.0.0:9911, allowing unauthenticated remote hosts to send malicious serialized PHP payloads. This vulnerability can lead to service crashes and potential object-injection attacks, posing a significant risk to web applications utilizing these versions. Organizations using affected Symfony versions should prioritize upgrading to the patched releases to mitigate these risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-45077
Severity
HIGH
CVSS
8.6
EPSS
0.45%

Original NVD 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.

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