GHSA-H6C8-CWW8-35HF
Vulnerability from github – Published: 2026-03-26 17:21 – Updated: 2026-03-27 21:30
VLAI?
Summary
OpenFGA has an Authorization Bypass through cached keys
Details
Description
In OpenFGA, 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.
Am I Affected?
Users are affected if the following preconditions are met: 1. The model has relations which rely on condition evaluation. 1. Caching is enabled.
Fix
Upgrade to OpenFGA v1.13.1.
Acknowledgement
OpenFGA would like to thank @Amemoyoi for the discovery and responsible disclosure.
Severity ?
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/openfga/openfga"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.13.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-33729"
],
"database_specific": {
"cwe_ids": [
"CWE-1289",
"CWE-20",
"CWE-345"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-26T17:21:50Z",
"nvd_published_at": "2026-03-27T01:16:20Z",
"severity": "MODERATE"
},
"details": "### Description\nIn OpenFGA, 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.\n\n### Am I Affected?\nUsers are affected if the following preconditions are met:\n1. The model has relations which rely on condition evaluation.\n1. Caching is enabled.\n\n### Fix\nUpgrade to OpenFGA v1.13.1.\n\n### Acknowledgement\nOpenFGA would like to thank @Amemoyoi for the discovery and responsible disclosure.",
"id": "GHSA-h6c8-cww8-35hf",
"modified": "2026-03-27T21:30:41Z",
"published": "2026-03-26T17:21:50Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openfga/openfga/security/advisories/GHSA-h6c8-cww8-35hf"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33729"
},
{
"type": "WEB",
"url": "https://github.com/openfga/openfga/commit/049b50ccd2cc7e163bd897f3d17a7b859ad146f8"
},
{
"type": "PACKAGE",
"url": "https://github.com/openfga/openfga"
},
{
"type": "WEB",
"url": "https://github.com/openfga/openfga/releases/tag/v1.13.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "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",
"type": "CVSS_V4"
}
],
"summary": "OpenFGA has an Authorization Bypass through cached keys"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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