How severe is CVE-2022-39340?

CVE-2022-39340 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2022-39340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-39340?

CVE-2022-39340 affects Openfga. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-39340?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-39340 published?

CVE-2022-39340 was published on 2022-10-25 and last updated on 2026-06-17.

CVE-2022-39340

CVE-2022-39340 is a medium-severity vulnerability in Openfga with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Openfga
Published: 2022-10-25
Last modified: 2026-06-17

Description

OpenFGA is an authorization/permission engine. Prior to version 0.2.4, the `streamed-list-objects` endpoint was not validating the authorization header, resulting in disclosure of objects in the store. Users `openfga/openfga` versions 0.2.3 and prior who are exposing the OpenFGA service to the internet are vulnerable. Version 0.2.4 contains a patch for this issue.

Frequently asked questions

What is CVE-2022-39340?: OpenFGA is an authorization/permission engine. Prior to version 0.2.4, the `streamed-list-objects` endpoint was not validating the authorization header, resulting in disclosure of objects in the store. Users `openfga/openfga` versions 0.2.3 and prior who are exposing the OpenFGA service to the internet are vulnerable. Version 0.2.4 contains a patch for this issue.
How severe is CVE-2022-39340?: CVE-2022-39340 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2022-39340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-39340?: CVE-2022-39340 affects Openfga. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-39340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-39340 published?: CVE-2022-39340 was published on 2022-10-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*

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