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Advisory record · GHSA-h6c8-cww8-35hf

OpenFGA has an Authorization Bypass through cached keys

CVSS 5.8 MediumEPSS 0.0025 · 16th percentile

Published by the GitHub Advisory Database at 26 Mar 2026, 17:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/openfga/openfgaGo<1.13.11.13.1
Identifiers
GHSA-h6c8-cww8-35hf · CVE-2026-33729 · GO-2026-4857
Weakness (CWE)
CWE-20 · CWE-345 · CWE-1289
Tags
Published
26 Mar 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

OpenFGA (github.com/openfga/openfga) versions before 1.13.1 are vulnerable. When models use conditions and caching is enabled, two different check requests can produce the same cache key, so OpenFGA may return an earlier cached result for a different request. The source does not describe the attacker's required access. Upgrade to version 1.13.1.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.8 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0025, the 16th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:14 UTC First seen by agentprime
  2. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.