OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset

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Summary

CVECVE-2026-55689
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-09 22:17:06 UTC
Updated2026-07-10 17:49:57 UTC
DescriptionOpenFGA 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.

Risk And Classification

Primary CVSS: v3.1 6.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.002980000 probability, percentile 0.216100000 (date 2026-07-12)

Problem Types: CWE-287 | CWE-287 CWE-287: Improper Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Openfga Openfga affected < 1.18.0 Not specified

References

ReferenceSourceLinkTags
github.com/openfga/helm-ch [email protected] github.com
github.com/openfga/helm-charts/releases/tag/openfga-0.3.9 [email protected] github.com
github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271 [email protected] github.com
github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv [email protected] github.com
github.com/openfga/openfga/releases/tag/v1.18.0 [email protected] github.com
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