{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "6.8.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c1246c5472ff9700868ee768e72de2911a3e4f2b"
            }
          ],
          "repo": "https://github.com/centrifugal/centrifugo",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g6vg-wj8f-48cj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49998.json"
  },
  "details": "Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one allowed issuer to verify a JWT for another allowed issuer because the JWKS cache and singleflight lookup were keyed only by JWT header kid, not by the resolved JWKS endpoint, issuer, audience, or trust-domain namespace, affecting client.token.jwks_public_endpoint, client.subscription_token.jwks_public_endpoint, internal/jwks/cache.go, and internal/jwks/manager.go. This issue is fixed in version 6.8.1.",
  "id": "CVE-2026-49998",
  "modified": "2026-08-04T11:30:53.755822583Z",
  "published": "2026-07-16T19:33:33.147Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/centrifugal/centrifugo/releases/tag/v6.8.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49998.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-g6vg-wj8f-48cj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49998"
    },
    {
      "type": "FIX",
      "url": "https://github.com/centrifugal/centrifugo/commit/15d785015c6f318c1b68ea40b813699c9f8bd2c4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/centrifugal/centrifugo/pull/1142"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Centrifugo: Dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass"
}