AUGUST 25, 2026
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Case File

CVE-2026-49471

HIGH · CVSS 8.3 EPSS 0.29% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-07 · Last synced 2026-08-06

CyberRota Analysis

AI-Generated

The vulnerability exists in Serena's built-in web dashboard, which exposes an unauthenticated Flask API that can be exploited via a DNS rebinding attack, allowing remote code execution through arbitrary content manipulation. This poses a significant risk as it enables attackers to execute commands on the agent's system simply by tricking a user into visiting a malicious webpage while the application is active. Organizations using versions prior to v1.5.2 should prioritize immediate updates to mitigate this critical security risk.

Public Exploit Signal

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

Detected Signals
remote code execution code execution

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

CVE
CVE-2026-49471
Severity
HIGH
CVSS
8.3
EPSS
0.29%

Original NVD Description

Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach this API from any browser and write arbitrary content to the agent's persistent memory store, which the agent reads and acts on autonomously. Combined with execute_shell_command using shell=True, this creates a remote code execution chain requiring only that the victim visit a malicious webpage while Serena is running. This issue is fixed in version v1.5.2.