CVE-2026-55689

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. 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: epss, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

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.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
—
EPSS
22.3%
KEV
Not listed

Published

June 19, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated Jul 9, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

v1.18.0

Patch available: openfga/openfga v1.18.0

https://github.com/openfga/openfga/releases/tag/v1.18.0
github_release Patch Available

openfga-0.3.9

Patch available: openfga/helm-charts openfga-0.3.9

https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9
github_commit

commit 44596773b2e6 (openfga/openfga)

Fix landed in openfga/openfga commit 44596773b2e6 — awaiting tagged release

https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271
github Patch Available

OpenFGA Improper Authentication · Advisory · openfga/openfga · GitHub

https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv

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—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 20× 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. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:25 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-16 17:03 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-15 02:00 UTCEPSS rescore
  12. 2026-07-15 02:00 UTCEPSS rescore
  13. 2026-07-14 16:08 UTCEG score recompute▲ 1.30
  14. 2026-07-14 01:43 UTCNVD updateCVSS v3 → 8.1 · severity → HIGH
  15. 2026-07-13 22:31 UTCEPSS rescore
  16. 2026-07-13 06:13 UTCEPSS rescore
  17. 2026-07-13 06:13 UTCEPSS rescore
  18. 2026-07-12 05:46 UTCEPSS rescore
  19. 2026-07-11 08:27 UTCEPSS rescore
  20. 2026-07-11 08:27 UTCEPSS rescore
  21. 2026-06-19 14:57 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55689?
CVE-2026-55689 is a high vulnerability published on June 19, 2026. 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…
When was CVE-2026-55689 disclosed?
CVE-2026-55689 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55689 actively exploited?
CVE-2026-55689 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-55689?
CVE-2026-55689 has a CVSS v3 base score of 8.1 (NVD).
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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