CVE-2026-55689

MEDIUMPre-NVD 6.86.8
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 6.8 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m
6.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: —CVSS: 6.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

Description

OpenFGA's OIDC authenticator skipped JWT audience (aud) validation when no audience was configured. In deployments where one identity provider issues tokens for multiple services, a token minted for an unrelated service could authenticate to OpenFGA.

Preconditions

This applies if the following preconditions are met:

  • You run OpenFGA with authn.method set to oidc.
  • You configured authn.oidc.issuer but did not set
authn.oidc.audience (--authn-oidc-audience / OPENFGA_AUTHN_OIDC_AUDIENCE).

Fix

Upgrade to OpenFGA 1.18.0 or greater. OpenFGA now refuses to start in oidc mode unless both authn.oidc.issuer and authn.oidc.audience are set, and the aud claim is always validated.

Acknowledgements

OpenFGA would like to thank https://github.com/0xVijay for the report.

CVSS v3
6.8
EG Score
6.8(low)
EPSS
—
KEV
Not listed

Published

June 19, 2026

Last Modified

June 19, 2026

Vendor Advisories for CVE-2026-55689(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/openfga/openfga—1.18.0—

Data Freshness Timeline

(refreshed 7× in last 7d / 17× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 00:59 UTCEG score recompute
  2. 2026-07-05 22:52 UTCEG score recompute
  3. 2026-07-04 20:46 UTCEG score recompute
  4. 2026-07-03 18:38 UTCEG score recompute
  5. 2026-07-02 16:32 UTCEG score recompute
  6. 2026-07-01 14:25 UTCEG score recompute
  7. 2026-06-30 12:18 UTCEG score recompute
  8. 2026-06-29 10:08 UTCEG score recompute
  9. 2026-06-28 08:00 UTCEG score recompute
  10. 2026-06-27 05:54 UTCEG score recompute
  11. 2026-06-26 03:47 UTCEG score recompute
  12. 2026-06-25 01:39 UTCEG score recompute
  13. 2026-06-23 23:33 UTCEG score recompute
  14. 2026-06-22 21:25 UTCEG score recompute
  15. 2026-06-21 19:15 UTCEG score recompute
  16. 2026-06-20 17:07 UTCEG score recompute
  17. 2026-06-19 14:57 UTCEG score recompute

Frequently asked(4)

What is CVE-2026-55689?
CVE-2026-55689 is a medium vulnerability published on June 19, 2026. OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset Description OpenFGA's OIDC authenticator skipped JWT audience (aud) validation when no audience was configured. In deployments where one identity provider issues tokens for multiple services, a token minted for an…
When was CVE-2026-55689 disclosed?
CVE-2026-55689 was first published in the National Vulnerability Database on June 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-55689?
CVE-2026-55689 has a CVSS v4.0 base score of 6.8 (CNA self-assessment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-55689?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55689, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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