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CVE-2026-49471

Oraios-ai Serena remote code execution

8.3 HIGHPublic exploitEPSS 0.37%
  1. Published7 Jul 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Oraios-ai Serena< 1.5.2

Remediation

Fixed in
Oraios-ai Serena≥ 1.5.2

References

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Frequently asked

Is CVE-2026-49471 being actively exploited?

CVE-2026-49471 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.37%.

How severe is CVE-2026-49471?

CVE-2026-49471 has a CVSS 3.1 base score of 8.3, rated high. EPSS estimates a 0.37% probability of exploitation.

Which products are affected by CVE-2026-49471?

Affected products include Oraios-ai Serena.

How do I fix CVE-2026-49471?

Upgrade affected software to a fixed version, for example Oraios-ai Serena 1.5.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-49471 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.