{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55170","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-16T15:13:28.166Z","datePublished":"2026-07-09T21:04:28.713Z","dateUpdated":"2026-07-10T14:26:15.294Z"},"containers":{"cna":{"title":"OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions","problemTypes":[{"descriptions":[{"cweId":"CWE-178","lang":"en","description":"CWE-178: Improper Handling of Case Sensitivity","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":2.1,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6"},{"name":"https://github.com/openfga/helm-charts/commit/96d5517a2693ff5def451dee7d6b9d1baeb281f8","tags":["x_refsource_MISC"],"url":"https://github.com/openfga/helm-charts/commit/96d5517a2693ff5def451dee7d6b9d1baeb281f8"},{"name":"https://github.com/openfga/openfga/commit/a2e0dbefc3e01a95c785f81a3563bc6571b08b11","tags":["x_refsource_MISC"],"url":"https://github.com/openfga/openfga/commit/a2e0dbefc3e01a95c785f81a3563bc6571b08b11"},{"name":"https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9","tags":["x_refsource_MISC"],"url":"https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9"},{"name":"https://github.com/openfga/openfga/releases/tag/v1.18.0","tags":["x_refsource_MISC"],"url":"https://github.com/openfga/openfga/releases/tag/v1.18.0"}],"affected":[{"vendor":"openfga","product":"openfga","versions":[{"version":"< 1.18.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-09T21:04:28.713Z"},"descriptions":[{"lang":"en","value":"OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, when MySQL is being used as the datastore and authorization decisions rely on case-sensitive user strings, the tuple, changelog, and authorization_model identifier columns can compare case-distinct values such as user:Alice and user:alice as equivalent, causing two distinct check requests to return the same response. This issue is fixed in 1.18.0."}],"source":{"advisory":"GHSA-cf98-j28v-49v6","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T14:26:05.820781Z","id":"CVE-2026-55170","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-10T14:26:15.294Z"}}]}}