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Advisory record · GHSA-8396-jffm-qx4w

OpenFGA has cache-key delimiter injection in shared-iterator and v2 iterator that caches enables intra-store authorization-decision poisoning

CVSS 5.0 MediumEPSS 0.0010 · 1st percentile

Published by the GitHub Advisory Database at 11 Jun 2026, 20:28 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/openfga/openfgaGo<1.16.01.16.0
Identifiers
GHSA-8396-jffm-qx4w · CVE-2026-48096 · GO-2026-5239
Weakness (CWE)
CWE-345 · CWE-668
Tags
Published
11 Jun 2026
Updated
10 Sept 2026

Machine-written summary

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

OpenFGA versions before 1.16.0 have a cache-key collision: when SharedIteratorCache and ListObjectsIteratorCache are both enabled, two distinct check requests can produce the same cache key, so a later request may receive an earlier cached result. The source does not describe the attacker's required access. Upgrade to OpenFGA 1.16.0 or later.

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
5.0 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0010, the 1st percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:13 UTC First seen by agentprime
  2. 31 Oct 2026, 14:13 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.