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TI-2026-26108 Aliases CVE-2026-33729GHSA-h6c8-cww8-35hf

OpenFGA has an Authorization Bypass through cached keys

Priority LOW 26CWE-1289Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-345.

Summary

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache key. This can result in OpenFGA reusing an earlier cached result for a different request. Users are affected if the model has relations which rely on condition evaluation andncaching is enabled. OpenFGA v1.13.1 contains a patch.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Fix Fixed openfga (openfga): 1.13.1github.com/openfga/openfga (Go): 1.13.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
openfgaopenfgabefore 1.13.11.13.1Patch availableCNA
—github.com/openfga/openfga (Go)before 1.13.11.13.1Patch availableGHSA-h6c8-cww8-35hf
  • openfga Vendoropenfga Affected before 1.13.1 Fixed in 1.13.1 Patch available CNA
  • github.com/openfga/openfga (Go) Vendor— Affected before 1.13.1 Fixed in 1.13.1 Patch available GHSA-h6c8-cww8-35hf

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*before 1.13.1Vulnerableopenfga
  • cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:* Versions before 1.13.1 Vulnerable ·openfga

Remediation

  • Fix · CNA openfga (openfga) Fixed in 1.13.1
  • Fix · GHSA-h6c8-cww8-35hf github.com/openfga/openfga (Go) Fixed in 1.13.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33729
  2. 2026-10-03 Alias added: GHSA-h6c8-cww8-35hf

References

Patch 1

Advisory 2

Other 2

  • TI-2023-17995 OpenFGA denial of service die to circular relationship CVSS 3.1HIGH 7.5
  • TI-2024-28441 OpenFGA Authorization Bypass CVSS 3.1CRITICAL 9.8
  • TI-2022-07597 OpenFGA Authorization Bypass CVSS 3.1CRITICAL 9.8
  • TI-2024-20816 OpenFGA Authorization Bypass CVSS 3.1CRITICAL 9.8
  • TI-2022-18717 OpenFGA Authorization Bypass CVSS 3.1CRITICAL 9.8
  • TI-2022-18716 OpenFGA Authorization Bypass CVSS 3.1CRITICAL 9.8
See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences