CVE-2026-40525
criticalpriority · track · 0EPSS 0.006 · 47 %ileEUUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.9–9.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-jgq2-vq69-gr6hOpenViking: Unauthenticated remote bot control via OpenAPI HTTP routes2026-04-17ghsa · osvUS
OpenViking prior to commit c7bb167 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.
- PYSEC-2026-438OpenViking: Unauthenticated remote bot control via OpenAPI HTTP routes2026-06-29vendor · osvUS
OpenViking prior to commit c7bb167 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.
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (11)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-40525cnnvd
- https://github.com/volcengine/OpenViking/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-40525cnnvd
- https://github.com/volcengine/OpenViking/commit/c7bb1676f4d037609f041bf39e4e2bd52e8f9820enisa_euvd
- https://github.com/volcengine/OpenViking/pull/1447enisa_euvd
- https://github.com/volcengine/OpenViking/releases/tag/v0.3.9enisa_euvd
- https://www.vulncheck.com/advisories/openviking-authentication-bypass-via-vikingbot-openapienisa_euvd
- https://github.com/volcengine/OpenViking/commit/c7bb1676f4d037609f041bf39e4e2bd52e8f9820Patchnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan