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Fencer Intel
high 7.5

CVE-2026-40293 json

OpenFGA Playground Preshared Key Exposure

published 7mo ago modified last mo. also EUVD-2026-23542 , GHSA-68m9-983m-f3v5 , GO-2026-5170

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

OpenFGA is an authorization/permission engine built for developers. In versions 0.1.4 through 1.13.1, when OpenFGA is configured to use preshared-key authentication with the built-in playground enabled, the local server includes the preshared API key in the HTML response of the /playground endpoint. The /playground endpoint is enabled by default and does not require authentication. It is intended for local development and debugging and is not designed to be exposed to production environments. Only those who run OpenFGA with `--authn-method` preshared, with the playground enabled, and with the playground endpoint accessible beyond localhost or trusted networks are vulnerable. To remediate the issue, users should upgrade to OpenFGA v1.14.0, or disable the playground by running `./openfga run --playground-enabled=false.`

Patch / fix

  • go github.com/openfga/openfga 1.14.0
  • Red Hat Multicluster Global Hub 1.7.0 1779925273
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14 1782693386
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15 1780677003
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-40293 updated cvss 7.5

OpenFGA: github.com/openfga/openfga: OpenFGA: Information disclosure of preshared API key via playground endpoint

  • Red Hat Ceph Storage 6 rhceph/rhceph-6-dashboard-rhel9 Red Hat Ceph Storage 9 rhceph/grafana-rhel10
    affected: no fix planned “Out of support scope”
  • Red Hat Multicluster Global Hub 1.7.3 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1779925273
    fixed: vendor fix RHSA-2026:24503
  • Red Hat Advanced Cluster Management for Kubernetes 2.14 rhacm2/acm-grafana-rhel9 1782693386
    fixed: vendor fix RHSA-2026:36882
  • Red Hat Advanced Cluster Management for Kubernetes 2.15 rhacm2/acm-grafana-rhel9 1780677003
    fixed: vendor fix RHSA-2026:24539
  • Red Hat Multicluster Global Hub 1.7.3 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1780361828, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1780615638, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1779887500, multicluster-globalhub/multicluster-globalhub-operator-bundle 1780616828, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1779815431 Red Hat Advanced Cluster Management for Kubernetes 2.14 rhacm2/thanos-rhel9 1783122371, rhacm2/acm-cli-rhel9 1783350872, rhacm2/console-rhel9 1783451729, rhacm2/prometheus-rhel9 1783259161, rhacm2/acm-search-v2-rhel9 1783381100, rhacm2/node-exporter-rhel9 1783327463, +37 more Red Hat Advanced Cluster Management for Kubernetes 2.15 rhacm2/thanos-rhel9 1780908155, rhacm2/acm-cli-rhel9 1780415683, rhacm2/console-rhel9 1780876734, rhacm2/prometheus-rhel9 1780906025, rhacm2/acm-search-v2-rhel9 1780877544, rhacm2/node-exporter-rhel9 1780876985, +39 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
6mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/openfga/openfga
>=0.1.4, <1.14.0
1.14.0

Affected products

  • openfga openfga
  • Red Hat Multicluster Global Hub 1.7.0
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15
  • Red Hat Red Hat Ceph Storage 6
  • Red Hat Red Hat Ceph Storage 9

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-201 Insertion of Sensitive Information Into Sent Data

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.