{"id":"CVE-2026-55866","revision":"c91c4c8614fb49408d950f8225853d25","records":[{"revision":"c91c4c8614fb49408d950f8225853d25","observedAt":"2026-10-25T14:19:05.298+00:00","statement":{"source":"nvd","id":"CVE-2026-55866","aliases":[],"title":"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 PE…","description":"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.","state":0,"publishedAt":"2026-09-14T18:17:56.15+00:00","modifiedAt":"2026-09-30T19:38:27.293+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","score":3.7,"severity":"LOW"}],"references":["https://github.com/authzed/spicedb/commit/44a1c9f266bd8a884bfebfc27181210302541b9b","https://github.com/authzed/spicedb/commit/ccde792fc48750740d025d4286d5c2c88614cd30","https://github.com/authzed/spicedb/pull/3188","https://github.com/authzed/spicedb/releases/tag/v1.54.0","https://github.com/authzed/spicedb/security/advisories/GHSA-4vrg-r928-h5vv"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55866","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-863"],"productCriteria":[],"sourceDates":{"published":"2026-09-14T18:17:56.150","lastModified":"2026-09-30T19:38:27.293"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-55866","identifiers":["CVE-2026-55866"]},"retained":false,"historicalAffected":[]}],"coverage":[]}