CVE-2026-55170 LOW

CVE-2026-55170: OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions

Vendor Openfga
Product openfga
Weakness CWE-178
Published July 9, 2026
Last update July 9, 2026
View on NVD All CVEs

CVSS base score

2.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 9, 2026 CVE published