{"id":"CVE-2026-86539","title":"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","summary":"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…","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-918"],"vendor":"knowns-dev","product":"knowns","affected":["knowns <= 0.33.0"],"published":"2026-09-07","updated":"2026-09-09","sourceUpdated":"2026-09-09T15:17:18.480","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86539","references":[{"url":"https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/embedding_models.go#L64-L110","label":"disclosure@vulncheck.com"},{"url":"https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/imports.go#L317-L330","label":"disclosure@vulncheck.com"},{"url":"https://github.com/knowns-dev/knowns/security/advisories/GHSA-qx9v-m9gg-p5jg","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/knowns-through-0.33.0-server-side-request-forgery-via-embedding-models-endpoint","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-09T14:52:03.550890Z"},"epss":0.00353,"epssPercentile":0.26196,"ingestedAt":"2026-09-08T15:33:26.980Z","slug":"CVE-2026-86539","body":"## Overview\n\nknowns 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}