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CVE-2026-55170
OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions
Low2.1EPSS 0.34%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | Low2.1 | 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 |
| NVDNVD · Analyzed | 4.0 | Low2.1 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.34% · top 73% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.1.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/openfga/openfgaGHSA-cf98-j28v-49v6 (opens in a new tab)
References (5)
- https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/openfga/helm-charts/commit/96d5517a2693ff5def451dee7d6b9d1baeb281f8 (opens in a new tab)x_refsource_MISC
- https://github.com/openfga/openfga/commit/a2e0dbefc3e01a95c785f81a3563bc6571b08b11 (opens in a new tab)x_refsource_MISC
- https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9 (opens in a new tab)x_refsource_MISC
- https://github.com/openfga/openfga/releases/tag/v1.18.0 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-cf98-j28v-49v6 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-55170)Record last updated .