CVE-2026-55170
OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions
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.
INFO
Published Date :
July 9, 2026, 10:17 p.m.
Last Modified :
July 14, 2026, 1:22 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update OpenFGA to version 1.18.0 or later.
- Ensure MySQL datastore configuration is case-sensitive for user strings.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-55170.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-55170 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-55170
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-55170 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-55170 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:openfga:helm_charts:*:*:*:*:*:openfga:*:* versions up to (excluding) 0.3.9 *cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:* versions up to (excluding) 1.18.0 Added Reference Type GitHub, Inc.: https://github.com/openfga/helm-charts/commit/96d5517a2693ff5def451dee7d6b9d1baeb281f8 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/openfga/openfga/commit/a2e0dbefc3e01a95c785f81a3563bc6571b08b11 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/openfga/openfga/releases/tag/v1.18.0 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 10, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-55170', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-10T14:26:05.820781Z'} -
New CVE Received by [email protected]
Jul. 09, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'openfga', 'product': 'openfga', 'versions': [{'status': 'affected', 'version': '< 1.18.0'}]}] Added 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. Added CVSS V4.0 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 Added CWE CWE-178 Added Reference https://github.com/openfga/helm-charts/commit/96d5517a2693ff5def451dee7d6b9d1baeb281f8 Added Reference https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9 Added Reference https://github.com/openfga/openfga/commit/a2e0dbefc3e01a95c785f81a3563bc6571b08b11 Added Reference https://github.com/openfga/openfga/releases/tag/v1.18.0 Added Reference https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6