GHSA-cf98-j28v-49v6

ghsaUSosv

OpenFGA Improper Policy Enforcement

view advisory published 2026-06-18Licence: CC-BY-4.0

## Description In OpenFGA, when MySQL is being used as the datastore, two distinct check requests can return the same response. ## Preconditions This applies if the following preconditions are met: 1. You run OpenFGA with MySQL as the datastore 2. Your authorization decisions rely on case-sensitive user strings. ## Fix Upgrade to OpenFGA 1.18.0 or greater. ## Acknowledgements OpenFGA would like to thank @sahajamoth for the detailed report.

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describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-55170USmedium5.4—
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 us…
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