Volcengine OpenViking up to 0.2.13 /bot/v1/chat missing authentication

Summaryinfo

A vulnerability classified as critical has been found in Volcengine OpenViking up to 0.2.13. This affects an unknown part of the file /bot/v1/chat. Performing a manipulation results in missing authentication. This vulnerability is known as CVE-2026-34999. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Volcengine OpenViking up to 0.2.13. This affects some unknown processing of the file /bot/v1/chat. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality. The summary by CVE is:

OpenViking versions 0.2.5 prior to 0.2.14 contain a missing authentication vulnerability in the bot proxy router that allows remote unauthenticated attackers to access protected bot proxy functionality by sending requests to the POST /bot/v1/chat and POST /bot/v1/chat/stream endpoints. Attackers can bypass authentication checks and interact directly with the upstream bot backend through the OpenViking proxy without providing valid credentials.

The weakness was published by Chia Min Jun Lennon. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-34999 since 03/31/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 0.2.14 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 27acda8d1701ff68423fbd6c902208e3c1ed9373 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17905). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Volcengine

Name

• OpenViking

Version

• 0.2.0
• 0.2.1
• 0.2.2
• 0.2.3
• 0.2.4
• 0.2.5
• 0.2.6
• 0.2.7
• 0.2.8
• 0.2.9
• 0.2.10
• 0.2.11
• 0.2.12
• 0.2.13

License

• open-source

Website

• Product: https://github.com/volcengine/OpenViking/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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