How severe is CVE-2024-23820?

CVE-2024-23820 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-23820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-23820?

CVE-2024-23820 affects Openfga. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-23820?

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

Does CVE-2024-23820 have an EU (EUVD) identifier?

Yes. CVE-2024-23820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0426.

When was CVE-2024-23820 published?

CVE-2024-23820 was published on 2024-01-26 and last updated on 2026-06-17.

CVE-2024-23820

CVE-2024-23820 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-401.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0426
Weakness: CWE-401
Affected product: Openfga
Published: 2024-01-26
Last modified: 2026-06-17

Description

OpenFGA, an authorization/permission engine, is vulnerable to a denial of service attack in versions prior to 1.4.3. In some scenarios that depend on the model and tuples used, a call to `ListObjects` may not release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an `out of memory` error and terminate. Version 1.4.3 contains a patch for this issue.

Frequently asked questions

What is CVE-2024-23820?: OpenFGA, an authorization/permission engine, is vulnerable to a denial of service attack in versions prior to 1.4.3. In some scenarios that depend on the model and tuples used, a call to `ListObjects` may not release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an `out of memory` error and terminate. Version 1.4.3 contains a patch for this issue.
How severe is CVE-2024-23820?: CVE-2024-23820 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-23820 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-23820?: CVE-2024-23820 affects Openfga. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-23820?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-23820 have an EU (EUVD) identifier?: Yes. CVE-2024-23820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0426.
When was CVE-2024-23820 published?: CVE-2024-23820 was published on 2024-01-26 and last updated on 2026-06-17.

References

Affected products (1)

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

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