FKIE_CVE-2026-49998

Vulnerability from fkie_nvd - Published: 2026-07-16 20:16 - Updated: 2026-07-16 20:16
Severity
8.2 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/centrifugal/centrifugo/commit/15d785015c6f318c1b68ea40b813699c9f8bd2c4
security-advisories@github.comhttps://github.com/centrifugal/centrifugo/pull/1142
security-advisories@github.comhttps://github.com/centrifugal/centrifugo/releases/tag/v6.8.1
security-advisories@github.comhttps://github.com/centrifugal/centrifugo/security/advisories/GHSA-g6vg-wj8f-48cj
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "centrifugo",
          "vendor": "centrifugal",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.8.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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",
  "lastModified": "2026-07-16T20:16:45.290",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-16T20:16:45.290",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/centrifugal/centrifugo/commit/15d785015c6f318c1b68ea40b813699c9f8bd2c4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/centrifugal/centrifugo/pull/1142"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/centrifugal/centrifugo/releases/tag/v6.8.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-g6vg-wj8f-48cj"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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