GHSA-8396-JFFM-QX4W

Vulnerability from github – Published: 2026-06-11 20:28 – Updated: 2026-06-11 20:28
VLAI
Summary
OpenFGA has cache-key delimiter injection in shared-iterator and v2 iterator that caches enables intra-store authorization-decision poisoning
Details

Description

In OpenFGA, when iterator caching is enabled, two distinct check requests can produce the same cache key, leading to OpenFGA reusing an earlier cached result for a subsequent request.

Preconditions

This applies if the following preconditions are present:

  • FGA runs with SharedIteratorCache enabled,
  • FGA runs with ListObjectsIteratorCache enabled.

Fix

Upgrade to version 1.16.0 or greater.

Acknowledgements

OpenFGA would like to thank @j4xT for the discovery and the detailed report.

Severity
5.0 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openfga/openfga"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.16.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-48096"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345",
      "CWE-668"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-11T20:28:18Z",
    "nvd_published_at": "2026-06-10T16:17:09Z",
    "severity": "MODERATE"
  },
  "details": "### Description\nIn OpenFGA, when iterator caching is enabled, two distinct check requests can produce the same cache key, leading to OpenFGA reusing an earlier cached result for a subsequent request.\n\n### Preconditions\nThis applies if the following preconditions are present:\n\n- FGA runs with SharedIteratorCache enabled,\n- FGA runs with ListObjectsIteratorCache enabled.\n\n### Fix\nUpgrade to version 1.16.0 or greater.\n\n### Acknowledgements\nOpenFGA would like to thank @j4xT for the discovery and the detailed report.",
  "id": "GHSA-8396-jffm-qx4w",
  "modified": "2026-06-11T20:28:18Z",
  "published": "2026-06-11T20:28:18Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openfga/openfga/security/advisories/GHSA-8396-jffm-qx4w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48096"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openfga/openfga"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openfga/openfga/releases/tag/v1.16.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenFGA has cache-key delimiter injection in shared-iterator and v2 iterator that caches enables intra-store authorization-decision poisoning"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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