{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86539","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-09-07T22:18:47.365Z","datePublished":"2026-09-07T23:03:17.906Z","dateUpdated":"2026-09-24T14:21:23.058Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-24T14:21:23.058Z"},"datePublic":"2026-08-16T00:00:00.000Z","title":"knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint","descriptions":[{"lang":"en","value":"knowns through 0.33.0 contains a server-side request forgery vulnerability in the POST /api/embedding-models/test endpoint that issues outbound requests to caller-supplied destinations without validation. Attackers can enumerate internal hosts and cloud metadata endpoints by observing transport error messages that reveal network reachability information."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Server-Side Request Forgery (SSRF)","cweId":"CWE-918","type":"CWE"}]}],"affected":[{"vendor":"knowns-dev","product":"knowns","defaultStatus":"unaffected","packageURL":"pkg:npm/knowns","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"0.33.0"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/knowns-dev/knowns/security/advisories/GHSA-qx9v-m9gg-p5jg","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-qx9v-m9gg-p5jg)"},{"url":"https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/embedding_models.go#L64-L110","tags":["technical-description"],"name":"Embedding-model test issues request to caller-supplied apiBase and returns the transport error (v0.33.0, unfixed)"},{"url":"https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/imports.go#L317-L330","tags":["technical-description"],"name":"gitLsRemoteHead runs git ls-remote against a caller-supplied URL (v0.33.0, unfixed)"},{"name":"VulnCheck Advisory: knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/knowns-through-0.33.0-server-side-request-forgery-via-embedding-models-endpoint"}],"credits":[{"lang":"en","value":"Tong Hoang Gia (uziii2208)","type":"finder"},{"lang":"en","value":"Nguyen Huy Hoang (hoanggxyuuki)","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-09T14:52:03.550890Z","id":"CVE-2026-86539","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-09T14:52:17.450Z"}}]}}