{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "15.3.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2dc8ba779216929c10c1998341d36963fe0eca7a"
            },
            {
              "fixed": "66b292b11bde3664f05ffb016c8082665d261ded"
            }
          ],
          "repo": "https://github.com/wg-easy/wg-easy",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-338",
      "CWE-613"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63089.json"
  },
  "details": "WireGuard Easy through 15.3.0, fixed in commit 66b292b, contains a cryptographically weak one-time link token generation vulnerability that allows unauthenticated network attackers to recover WireGuard peer credentials by brute-forcing a keyspace of at most 1000 candidate tokens per client ID, as the token is computed using CRC32 over a random value constrained to 0-999. Attackers can enumerate candidate tokens against the unauthenticated /cnf/:oneTimeLink route, which lacks rate limiting and does not validate token expiration, to obtain a peer's PrivateKey and PresharedKey and impersonate that peer on the VPN network.",
  "id": "CVE-2026-63089",
  "modified": "2026-07-19T03:31:11.441597275Z",
  "published": "2026-07-16T19:28:37.500Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63089.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63089"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/wireguard-easy-weak-token-generation-information-disclosure-via-otl-route"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/wg-easy/wg-easy/pull/2661"
    },
    {
      "type": "FIX",
      "url": "https://github.com/wg-easy/wg-easy/commit/66b292b11bde3664f05ffb016c8082665d261ded"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/wg-easy/wg-easy"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "WireGuard Easy Weak Token Generation Information Disclosure via OTL Route"
}