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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-33729

36
FAUCET Score

CVE-2026-33729 affects OpenFGA versions prior to 1.13.1, where a caching vulnerability can lead to incorrect authorization decisions. Specifically, under certain conditions, models using relations with condition evaluation and caching enabled may reuse cached results for different requests due to identical cache keys. This medium-severity vulnerability (CVSS 5.8) has a network attack vector and low attack complexity, requiring low privileges, with a high potential impact on security confidentiality, integrity, and availability. There is currently no evidence of active exploitation, nor is any public exploit code available. Community discussion and media coverage for this vulnerability are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.13.1CPE matchmatch criteria
cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.8MEDIUM

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 1st percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/openfga/openfgaFixed in: 1.13.1

Vendor Advisories (1)

goGHSA-h6c8-cww8-35hfmedium

OpenFGA has an Authorization Bypass through cached keys

Mar 26, 2026

References

github.com / openfga/openfga/commit/049b50ccd2cc7e163bd897f3d17a7b859ad146f8
Patch
github.com / openfga/openfga/releases/tag/v1.13.1
Release Notes
github.com / openfga/openfga/security/advisories/GHSA-h6c8-cww8-35hf
Vendor Advisory