{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.33.0"
              },
              {
                "fixed": "0.33.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c6ed4cb8548c266930910d3b24b7605fa2c21150"
            }
          ],
          "repo": "https://github.com/knowns-dev/knowns",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-qx9v-m9gg-p5jg"
  ],
  "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"
  },
  "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.",
  "id": "CVE-2026-86539",
  "modified": "2026-09-09T03:30:30.014518544Z",
  "published": "2026-09-07T23:03:17.906Z",
  "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"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint"
}