{"cve":"CVE-2026-40525","nvd":{"published":"2026-04-17T19:16:39.017","modified":"2026-10-26T00:10:00.150","status":"Analyzed","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.","cvss_v4":{"vector":"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","score":9.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-636"],"references":["https://github.com/volcengine/OpenViking/commit/c7bb1676f4d037609f041bf39e4e2bd52e8f9820","https://github.com/volcengine/OpenViking/pull/1447","https://github.com/volcengine/OpenViking/releases/tag/v0.3.9","https://www.vulncheck.com/advisories/openviking-authentication-bypass-via-vikingbot-openapi"],"products":["volcengine:openviking"],"source":"nvd","synced_at":"2026-10-26T00:31:35.753532240+00:00"},"epss":{"cve":"CVE-2026-40525","score":0.00571,"percentile":0.46967,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-jgq2-vq69-gr6h","url":"https://osv.dev/vulnerability/GHSA-jgq2-vq69-gr6h","summary":"OpenViking: Unauthenticated remote bot control via OpenAPI HTTP routes","modified":"2026-09-10T03:51:02.331399715Z","packages":[{"ecosystem":"PyPI","name":"openviking","purl":"pkg:pypi/openviking","ranges":["<0.3.9"],"fixed":["0.3.9"]}]},{"id":"PYSEC-2026-438","url":"https://osv.dev/vulnerability/PYSEC-2026-438","summary":"OpenViking: Unauthenticated remote bot control via OpenAPI HTTP routes","modified":"2026-07-01T20:22:59.524333Z","packages":[{"ecosystem":"PyPI","name":"openviking","purl":"pkg:pypi/openviking","ranges":["<0.3.9"],"fixed":["0.3.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}