CVE-2026-40525

OpenViking prior to version 0.3.9 contains an authentication bypass vulnerability in the VikingBot OpenAPI HTTP route surface where the authentication check fails open when the api_key configuration value is unset or empty. Remote attackers with network access to the exposed service can invoke privileged bot-control functionality without providing a valid X-API-Key header, including submitting attacker-controlled prompts, creating or using bot sessions, and accessing downstream tools, integrations, secrets, or data accessible to the bot.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/volcengine/OpenViking/commit/c7bb1676f4d037609f041bf39e4e2bd52e8f9820	Patch
https://github.com/volcengine/OpenViking/pull/1447	Exploit Patch Vendor Advisory
https://github.com/volcengine/OpenViking/releases/tag/v0.3.9	Release Notes
https://www.vulncheck.com/advisories/openviking-authentication-bypass-via-vikingbot-openapi	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:volcengine:openviking:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-17 19:16

Updated : 2026-07-14 21:16

NVD link : CVE-2026-40525

Mitre link : CVE-2026-40525

CVE.ORG link : CVE-2026-40525

JSON object : View

Products Affected

volcengine

openviking

CWE

CWE-636

Not Failing Securely ('Failing Open')

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