CVE-2025-55213

criticalpriority · track · 39OT risk · elevatedEPSS 0.003 · 25 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.32% (25th) EPSS

CVSS 9.8 · critical

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. OpenFGA v1.9.3 to v1.9.4 ( openfga-0.2.40 <= Helm chart <= openfga-0.2.41, v1.9.3 <= docker <= v.1.9.4) are vulnerable to improper policy enforcement when certain Check and ListObject calls are executed. This vulnerability is fixed in 1.9.5.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–critical · 1.5–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v4.05.8mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:Hsecondary · ENISA EU

v4.05.8mediumCVSS: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:Xsecondary · security-advisories@github.com

v4.01.5lowCVSS: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:U/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:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863USCWE-863US

affected products (4)

Products and version ranges known to be affected.

openfga openfga1.9.3, → 1.9.5enisa_euvdEU
openfga helm charts0.2.40 → 0.2.42nvdUScpe:2.3:a:openfga:helm_charts:*:*:*:*:*:*:*:*
openfga openfga1.9.3 → 1.9.5nvdUScpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*
Go github.com/openfga/openfga1.9.3 → 1.9.5osvUSpkg:golang/github.com/openfga/openfga

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-mgh9-4mwp-fg55OpenFGA Authorization Bypass 2025-08-18ghsa · osvUS
### Overview OpenFGA v1.9.3 to v1.9.4 ( openfga-0.2.40 <= Helm chart <= openfga-0.2.41, v1.9.3 <= docker <= v.1.9.4) are vulnerable to improper policy enforcement when certain Check and ListObject calls are executed. ### Am I Affected? You are affected by this vulnerability if you are using OpenFGA v1.9.3 to v1.9.4, specifically under the following preconditions: - Calling Check API or ListObjects with an [authorization model](https://openfga.dev/docs/concepts#what-is-an-authorization-model) that has a relationship directly assignable by more than 1 [userset](https://openfga.dev/docs/modeling/building-blocks/usersets) with same [type](https://openfga.dev/docs/concepts#what-is-a-type), and - There are check or list object queries that rely on the above relationship, and - You have userset tuples that are assigned to the above relationship ### Fix Upgrade to v1.9.5. This upgrade is backwards compatible. ### Workaround Downgrade to v1.9.2 with enable-check-optimizations removed from OPENFGA_EXPERIMENTALS ### Acknowledgments OpenFGA would like Dominic Harries and rrozza-apolitical to thank for discovering this vulnerability.
GO-2025-3894OpenFGA Authorization Bypass in github.com/openfga/openfga2025-08-29vendor · osvUS
OpenFGA Authorization Bypass in github.com/openfga/openfga

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2025-08-18modified 2026-06-17

references (9)

External citations — patches, advisories, analysis.

scry

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