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FKIE_CVE-2026-55866

Vulnerability from fkie_nvd - Published: 2026-09-14 18:17 - Updated: 2026-09-14 19:17
Severity
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
SpiceDB is an open source database system for creating and managing security-critical application permissions. From 1.34.0 until 1.54.0, SpiceDB can return PERMISSIONSHIP_HAS_PERMISSION instead of PERMISSIONSHIP_CONDITIONAL_PERMISSION or PERMISSIONSHIP_NO_PERMISSION because checkRequestToKey() and checkRequestToKeyWithCanonical() in internal/dispatch/keys/computed.go omit CheckHints when constructing dispatch Check cache keys. The incorrect result requires a permission combining relations with intersection or exclusion, a subject reachable through caveated and non-caveated branches, LookupResources with a context parameter running concurrently with CheckPermission or CheckBulkPermissions for the same resource and subject, and an enabled dispatch result cache. Under these conditions, a result computed for one hint set can poison the cache entry used by a semantically different authorization check, allowing permission without satisfying the caveat. This issue is fixed in version 1.54.0.
References
security-advisories@github.comhttps://github.com/authzed/spicedb/commit/44a1c9f266bd8a884bfebfc27181210302541b9b
security-advisories@github.comhttps://github.com/authzed/spicedb/commit/ccde792fc48750740d025d4286d5c2c88614cd30
security-advisories@github.comhttps://github.com/authzed/spicedb/pull/3188
security-advisories@github.comhttps://github.com/authzed/spicedb/releases/tag/v1.54.0
security-advisories@github.comhttps://github.com/authzed/spicedb/security/advisories/GHSA-4vrg-r928-h5vv
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "spicedb",
          "vendor": "authzed",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.34.1, \u003c 1.54.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SpiceDB is an open source database system for creating and managing security-critical application permissions. From 1.34.0 until 1.54.0, SpiceDB can return PERMISSIONSHIP_HAS_PERMISSION instead of PERMISSIONSHIP_CONDITIONAL_PERMISSION or PERMISSIONSHIP_NO_PERMISSION because checkRequestToKey() and checkRequestToKeyWithCanonical() in internal/dispatch/keys/computed.go omit CheckHints when constructing dispatch Check cache keys. The incorrect result requires a permission combining relations with intersection or exclusion, a subject reachable through caveated and non-caveated branches, LookupResources with a context parameter running concurrently with CheckPermission or CheckBulkPermissions for the same resource and subject, and an enabled dispatch result cache. Under these conditions, a result computed for one hint set can poison the cache entry used by a semantically different authorization check, allowing permission without satisfying the caveat. This issue is fixed in version 1.54.0."
    }
  ],
  "id": "CVE-2026-55866",
  "lastModified": "2026-09-14T19:17:33.193",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-55866",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-14T18:15:32.043031Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-14T18:17:56.150",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/authzed/spicedb/commit/44a1c9f266bd8a884bfebfc27181210302541b9b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/authzed/spicedb/commit/ccde792fc48750740d025d4286d5c2c88614cd30"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/authzed/spicedb/pull/3188"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/authzed/spicedb/releases/tag/v1.54.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/authzed/spicedb/security/advisories/GHSA-4vrg-r928-h5vv"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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