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TI-2026-36626 Aliases CVE-2026-49471GHSA-37h2-6p4f-mp3q

Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Priority HIGH 71CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Security bypass, Tampering
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-306 and CWE-352.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00373 31st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed serena (oraios): 1.5.2serena-agent (PyPI): 1.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
oraiosserenabefore 1.5.21.5.2Patch availableCNA
—serena-agent (PyPI)before 1.5.21.5.2Patch availableGHSA-37h2-6p4f-mp3q
  • serena Vendororaios Affected before 1.5.2 Fixed in 1.5.2 Patch available CNA
  • serena-agent (PyPI) Vendor— Affected before 1.5.2 Fixed in 1.5.2 Patch available GHSA-37h2-6p4f-mp3q

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:oraios-ai:serena:*:*:*:*:*:*:*:*before 1.5.2VulnerableOraios AI
  • cpe:2.3:a:oraios-ai:serena:*:*:*:*:*:*:*:* Versions before 1.5.2 Vulnerable ·Oraios AI

Remediation

  • Fix · CNA serena (oraios) Fixed in 1.5.2
  • Fix · GHSA-37h2-6p4f-mp3q serena-agent (PyPI) Fixed in 1.5.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-49471
  2. 2026-10-03 Alias added: GHSA-37h2-6p4f-mp3q

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • TI-2026-71732 Symlink following in Serena file tools exposes files outside project root CVSS 4.0HIGH 8.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences