CVE-2026-55689
OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset
Description
OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated service by the same identity provider to authenticate to OpenFGA. This issue is fixed in 1.18.0.
INFO
Published Date :
July 9, 2026, 10:17 p.m.
Last Modified :
July 14, 2026, 1:28 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 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update OpenFGA to version 1.18.0 or later.
- Ensure authn.oidc.audience is configured.
- Validate JWT audience claims.
- Monitor authentication logs for suspicious activity.
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-2026-55689.
| URL | Resource |
|---|---|
| https://github.com/openfga/helm-ch | Broken Link |
| https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9 | Product Release Notes |
| https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271 | Patch |
| https://github.com/openfga/openfga/releases/tag/v1.18.0 | Product Release Notes |
| https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-55689 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-2026-55689
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-2026-55689 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-55689 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:H/I:H/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-ch Types: Broken Link 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/44596773b2e62738720ef215bf7fa04352954271 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-hcxc-wf8j-23hv Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 10, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-55689', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-10T13:45:33.367225Z'} -
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, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated service by the same identity provider to authenticate to OpenFGA. This issue is fixed in 1.18.0. Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N Added CWE CWE-287 Added Reference https://github.com/openfga/helm-ch Added Reference https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9 Added Reference https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271 Added Reference https://github.com/openfga/openfga/releases/tag/v1.18.0 Added Reference https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv