{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0.1.0-alpha.1"
                  },
                  {
                    "fixed": "0.1.0-alpha.9"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "original_tag": "v0.1.0-alpha.9",
                "range": [
                  {
                    "fixed": "bcf9bc22e5f4bb00eb504c1ab5f55815e0e91f23"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "ffc3e6072383ea6e9cf3fbadc7cf473db448b364"
            },
            {
              "fixed": "bcf9bc22e5f4bb00eb504c1ab5f55815e0e91f23"
            }
          ],
          "repo": "https://github.com/google/agentmesh",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hp3x-79wr-rx66"
  ],
  "database_specific": {
    "cna_assigner": "Google",
    "cwe_ids": [
      "CWE-306",
      "CWE-522"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103090.json"
  },
  "details": "Missing Authentication for Critical Function (CWE-306) and Insufficiently Protected Credentials (CWE-522) in the control plane enrollment status handler (HandleEnrollStatus at GET /enroll/status in internal/controlplane/server.go) in Google OSS Agent Mesh (SAM) versions 0.1.0-alpha.1 through 0.1.0-alpha.8 allow an unauthenticated remote attacker to retrieve an approved bootstrap-enrolled peer's signed Biscuit identity token by supplying a peer_id obtainable from the unauthenticated GET /info endpoint. A related flaw in POST /enroll allowed any bootstrap-token holder to re-fetch another peer's credential. An attacker can replay the disclosed Biscuit token as a bearer credential on /policies to read mesh authorization policies and on /routers/lease to overwrite advertised router multiaddrs. Users should upgrade to version 0.1.0-alpha.9 or later, which requires cryptographic proof of possession of the enrollment private key on credential-releasing endpoints, enforces rate limiting, and validates router lease addresses.",
  "id": "CVE-2026-103090",
  "modified": "2026-10-24T02:30:53.425704720Z",
  "published": "2026-10-21T22:16:59.777Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103090.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/google/sam/releases/tag/v0.1.0-alpha.9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/google/sam/security/advisories/GHSA-hp3x-79wr-rx66"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103090"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Unauthenticated Biscuit Credential Disclosure via GET /enroll/status in Google OSS Agent Mesh (SAM)"
}