CVE-2026-40293: OpenFGA is an authorization/permission engine built for developers

Routine

MEDIUM 6.5REMOTEUPGRADE

CVE-2026-40293 is a medium-severity flaw (CVSS 6.5) affecting openfga. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 des

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-200, CWE-201
Published	2026-04-17
Last modified	2026-08-24

Publisher (CNA): GitHub, Inc. · Vendor: openfga

Last updated 2026-08-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-17 21:16 UTCPublished CVE record published
2026-08-24 13:18 UTCUpdated Record last modified

openfga openfga UPGRADE

Affected: >= 0.1.4 and < 1.14.0

Fixed in: 1.14.0

Safe to downgrade to: a release before 0.1.4

1. Check installed version

apt-cache policy openfga || rpm -q openfga || openfga --version

2. UPGRADE to 1.14.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openfga

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openfga

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.1.4 (Debian / Ubuntu)

apt-cache madison openfga sudo apt install openfga=<VERSION_BEFORE_0.1.4> sudo apt-mark hold openfga

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openfga sudo dnf downgrade openfga-<VERSION_BEFORE_0.1.4> sudo dnf versionlock add openfga

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40293?

openfga: upgrade to 1.14.0. Exact commands for each OS are on this page.

Is CVE-2026-40293 being exploited?

CVE-2026-40293 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40293 affect?

CVE-2026-40293 affects openfga. Severity is medium (CVSS 6.5). 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 preshar

How urgent is CVE-2026-40293?

Priority 33/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-34972 MEDIUM 5.0 UPGRADE UPGRADE OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired b
CVE-2026-48096 MEDIUM 5.0 UPGRADE UPGRADE OpenFGA is an authorization/permission engine built for developers
CVE-2026-41131 MEDIUM 5.0 UPGRADE UPGRADE OpenFGA is an authorization/permission engine built for developers

References

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