{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40525","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-04-13T20:29:02.810Z","datePublished":"2026-04-17T18:19:12.315Z","dateUpdated":"2026-04-21T13:34:32.327Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-04-21T13:34:32.327Z"},"title":"OpenViking < 0.3.9 Authentication Bypass via VikingBot OpenAPI","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-636","description":"CWE-636 Not Failing Securely ('Fail Open')","type":"CWE"}]}],"affected":[{"vendor":"volcengine","product":"OpenViking","repo":"https://github.com/volcengine/OpenViking","versions":[{"status":"affected","version":"0","lessThan":"0.3.9","versionType":"semver"},{"status":"unaffected","version":"c7bb1676f4d037609f041bf39e4e2bd52e8f9820","versionType":"git"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"OpenViking prior to version 0.3.9&nbsp;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.<br>"}]}],"references":[{"url":"https://github.com/volcengine/OpenViking/releases/tag/v0.3.9","tags":["release-notes"]},{"url":"https://github.com/volcengine/OpenViking/pull/1447","tags":["issue-tracking"]},{"url":"https://github.com/volcengine/OpenViking/commit/c7bb1676f4d037609f041bf39e4e2bd52e8f9820","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/openviking-authentication-bypass-via-vikingbot-openapi","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"CRITICAL","baseScore":9.1,"vectorString":"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"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"CRITICAL","baseScore":9.1,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}}],"credits":[{"lang":"en","value":"Chia Min Jun Lennon","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-40525","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-04-20T13:37:40.440711Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-20T13:46:08.774Z"}}]}}