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CVE-2026-40525— OpenViking < 0.3.9 Authentication Bypass via VikingBot OpenAPI

Quick assessment

Affected
volcengine OpenViking
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenViking是Volcengine开源的一个人工智能代理的上下文数据库。 OpenViking c7bb167之前版本存在安全漏洞，该漏洞源于VikingBot OpenAPI HTTP路由表面存在身份验证绕过，当api_key配置值未设置或为空时，身份验证检查失败开放，可能导致远程攻击者无需提供有效X-API-Key标头即可调用特权机器人控制功能。

CVSS 9.1 · Critical EPSS 0.57% · P45

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 2

VendorProduct Version RangeStatus
volcengine OpenViking < 0.3.9 affected
c7bb1676f4d037609f041bf39e4e2bd52e8f9820 unaffected
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I. Basic Information for CVE-2026-40525

Vulnerability Information
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Vulnerability Title
OpenViking < 0.3.9 Authentication Bypass via VikingBot OpenAPI
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未能安全地进行程序失效(Failing Open)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenViking 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenViking是Volcengine开源的一个人工智能代理的上下文数据库。 OpenViking c7bb167之前版本存在安全漏洞，该漏洞源于VikingBot OpenAPI HTTP路由表面存在身份验证绕过，当api_key配置值未设置或为空时，身份验证检查失败开放，可能导致远程攻击者无需提供有效X-API-Key标头即可调用特权机器人控制功能。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
volcengine OpenViking 0 ~ 0.3.9 -

II. Public POCs for CVE-2026-40525

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III. Intelligence Information for CVE-2026-40525

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Patches & Fixes for CVE-2026-40525 (2)

Vendor Advisories for CVE-2026-40525 (1)

IV. Related Vulnerabilities

Same product: OpenViking
Same vendor: volcengine
Same weakness: CWE-636

V. Comments for CVE-2026-40525

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