CVE-2026-49471

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.

CVSS v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/oraios/serena/commit/016ccbe1c095a3eed7967737ac1d4df2754f5d96	Patch
https://github.com/oraios/serena/releases/tag/v1.5.2	Release Notes
https://github.com/oraios/serena/security/advisories/GHSA-37h2-6p4f-mp3q	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:oraios-ai:serena:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-07 21:17

Updated : 2026-07-20 14:54

NVD link : CVE-2026-49471

Mitre link : CVE-2026-49471

CVE.ORG link : CVE-2026-49471

JSON object : View

Products Affected

oraios-ai

serena

CWE

CWE-306

Missing Authentication for Critical Function

CWE-352

Cross-Site Request Forgery (CSRF)

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