OpenFGA has an Authorization Bypass through cached keys
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-33729
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 08:20 UTC · Revision 1
Source evidence
OpenFGA has an Authorization Bypass through cached keys
core-osv · Original sourcePublished 27 Mar 2026, 00:27 UTC
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.
osv:CVE-2026-33729
Complete source record
{
"id": "09e912acc34eab9d25856532007c7e2a3f855fb84d1c6b2f711e95136efb8169",
"url": "https://osv.dev/vulnerability/CVE-2026-33729",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "OpenFGA has an Authorization Bypass through cached keys",
"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.",
"evidence": "osv:CVE-2026-33729",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-33729",
"aliases": [
"CVE-2026-33729",
"GHSA-h6c8-cww8-35hf",
"GO-2026-4857"
],
"metrics": [
{
"type": "CVSS_V4",
"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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openfga/openfga",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "cbb16abf8cd582012540f6d40be34b133d90ce7b"
},
{
"fixed": "049b50ccd2cc7e163bd897f3d17a7b859ad146f8"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.13.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "049b50ccd2cc7e163bd897f3d17a7b859ad146f8"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "cbb16abf8cd582012540f6d40be34b133d90ce7b"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.13.1"
}
]
}
}
],
"versions": [
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"v1.13.0",
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"v1.3.7",
"v1.3.6",
"v1.3.5",
"v1.3.4",
"v1.3.3",
"v1.3.2",
"v1.3.1",
"v1.3.0",
"v1.2.0",
"v1.1.1",
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"v1.0.0",
"v0.4.3",
"v0.4.2",
"v0.4.1",
"v0.4.0",
"v0.3.7",
"v0.3.6",
"v0.3.5",
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"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33729.json"
}
}
],
"modified": "2026-10-28T02:30:27.513450357Z",
"provider": "osv",
"references": [
"https://github.com/openfga/openfga/releases/tag/v1.13.1",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33729.json",
"https://github.com/openfga/openfga/security/advisories/GHSA-h6c8-cww8-35hf",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33729",
"https://github.com/openfga/openfga/commit/049b50ccd2cc7e163bd897f3d17a7b859ad146f8"
],
"provider_metadata": {
"cwe_ids": [
"CWE-1289",
"CWE-20",
"CWE-345"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33729.json"
}
},
"related_cves": [
{
"value": "CVE-2026-33729",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 493744,
"published_at": "2026-03-27T00:27:40.726+00:00"
}