CVE-2026-55170
OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions
- State
- Published
- Severity
- 2.1 Low
- Published
- Jul 9, 2026
- Updated
- Jul 10, 2026
- Reserved
- Jun 16, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.1 Low | 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 | GitHub_M |
Weaknesses
- CWE-178 Improper Handling of Case Sensitivity
Affected Products
| Product | Versions |
|---|---|
openfgaopenfga |
|
References
- https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6
- https://github.com/openfga/helm-charts/commit/96d5517a2693ff5def451dee7d6b9d1baeb281f8
- https://github.com/openfga/openfga/commit/a2e0dbefc3e01a95c785f81a3563bc6571b08b11
- https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9
- https://github.com/openfga/openfga/releases/tag/v1.18.0
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