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Vulnerability record · CVE-2026-34999 · published 1 April 2026

CVE-2026-34999: Volcengine openviking missing authentication for critical function vulnerability

Volcengine · Openviking

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.

6.9 CVSS 4.0 Medium EPSS 0.78% · top 45.8% CWE-306 · Missing authentication for critical function
6.9CVSS 4.0 base score
0.78%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
14 Jul 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/volcengine/OpenViking/commit/27acda8d1701ff68423fbd6c902208e3c1ed9373 Patch
https://github.com/volcengine/OpenViking/pull/996 Issue Tracking
https://github.com/volcengine/OpenViking/releases/tag/v0.2.14 Release Notes
https://www.vulncheck.com/advisories/openviking-bot-proxy-endpoints-allow-unauthenticated-access Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-34999), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.