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CVE-2026-49471

HIGH
8.3
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-49471
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-30 04:17 UTC
Published
2026-07-07 20:50 UTC
Last updated
2026-07-07 20:50 UTC
Primary CWE
CWE-306
CWE-306: Missing Authentication for Critical Function
Vendor / Product
oraios / serena
Sources
cve.org  ·  NVD

Severity & Metrics

8.3 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected products (1)
VendorProductPlatformVersions
oraios serena — < 1.5.2
Weakness (CWE)
CWESourceDescription
CWE-306 cna CWE-306: Missing Authentication for Critical Function
CWE-352 cna CWE-352: Cross-Site Request Forgery (CSRF)
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.3 HIGH 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
References (3)
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