High severity · published Apr 6, 2026
CVE-2026-34972
OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision
8.8
CVSS
0.2%
EPSS
No
On KEV
Description
OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. From 1.8.0 to 1.13.1, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement. This vulnerability is fixed in 1.14.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openfga · openfga
>= 1.8.0, < 1.14.0 · source: vendor, NVD
HC
Helm Charts · Openfga
0.2.16 before 0.2.62 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34972
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34972
Vendor Advisory
https://github.com/openfga/openfga/security/advisories/GHSA-jwvj-g8pc-cx45
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