CVE-2026-55170

LOW

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

Title source: cna
STIX 2.1

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.

References (5)

Core 5

Scores

CVSS v4 2.1
EPSS 0.0034
EPSS Percentile 26.2%
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

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-178
Status published
Products (1)
openfga/openfga < 1.18.0
Published Jul 09, 2026
Tracked Since Jul 10, 2026