CVE-2026-40525 (GCVE-0-2026-40525)

Vulnerability from cvelistv5 – Published: 2026-04-17 18:19 – Updated: 2026-04-21 13:34
VLAI?
Title
OpenViking < 0.3.9 Authentication Bypass via VikingBot OpenAPI
Summary
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.
Severity ?
9.1 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-636 - Not Failing Securely ('Fail Open')
Assigner
References
Impacted products
Vendor Product Version
volcengine OpenViking Affected: 0 , < 0.3.9 (semver)
Unaffected: c7bb1676f4d037609f041bf39e4e2bd52e8f9820 (git)
Create a notification for this product.
Credits
Chia Min Jun Lennon
Show details on NVD website
To clipboard 

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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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