{"id":"CVE-2026-86539","summary":"knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint","details":"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.","aliases":["GHSA-qx9v-m9gg-p5jg"],"modified":"2026-09-09T03:48:17.341659917Z","published":"2026-09-07T23:03:17.906Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86539.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86539.json"},{"type":"ADVISORY","url":"https://github.com/knowns-dev/knowns/security/advisories/GHSA-qx9v-m9gg-p5jg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86539"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/knowns-through-0.33.0-server-side-request-forgery-via-embedding-models-endpoint"},{"type":"ARTICLE","url":"https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/embedding_models.go#L64-L110"},{"type":"ARTICLE","url":"https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/imports.go#L317-L330"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/knowns-dev/knowns","events":[{"introduced":"0"},{"fixed":"c6ed4cb8548c266930910d3b24b7605fa2c21150"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0.33.0"},{"fixed":"0.33.0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v0.32.0","v0.31.0","v0.30.0","v0.29.1","v0.29.0","v0.28.0","v0.27.1","v0.27.0","v0.23.0","v0.26.0","v0.25.0","v0.24.1","v0.24.0","v0.22.2","v0.22.1","v0.22.0","v0.21.0","v0.20.5","v0.20.4","v0.20.3","v0.20.2","v0.20.1","v0.20.0","v0.19.2","v0.19.1","v0.19.0","v0.18.4","v0.18.3","v0.18.2","v0.18.1","v0.18.0","v0.17.1","v0.17.0","v0.16.3","v0.16.2","v0.16.1","v0.16.0","v0.15.3","v0.15.2","v0.15.1","v0.15.0","v0.12.4","v0.12.3","v0.12.2","v0.12.1","v0.12.0","v0.11.4","v0.11.3","v0.11.2","v0.11.1","v0.11.0","v0.10.6","v0.10.5","v0.10.4","v0.10.3","v0.10.2","v0.10.1","v0.10.0","v0.9.0","v0.8.9","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.0","v0.6.0","v0.5.0","v0.4.0","v0.3.1","v0.3.0","v0.2.1","v0.2.0","v0.1.8","v0.1.7","v0.1.6","v0.1.5","v0.1.4","v0.1.3","v0.1.2","v0.1.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86539.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}