How severe is CVE-2026-33729?

CVE-2026-33729 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33729 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33729?

CVE-2026-33729 affects Openfga. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33729?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-33729 have an EU (EUVD) identifier?

Yes. CVE-2026-33729 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16507.

When was CVE-2026-33729 published?

CVE-2026-33729 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-33729

CVE-2026-33729 is a critical-severity vulnerability in Openfga with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 5.8
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16507
Weakness: CWE-20
Affected product: Openfga
Published: 2026-03-27
Last modified: 2026-06-17

Description

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache key. This can result in OpenFGA reusing an earlier cached result for a different request. Users are affected if the model has relations which rely on condition evaluation andncaching is enabled. OpenFGA v1.13.1 contains a patch.

Frequently asked questions

What is CVE-2026-33729?: OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache key. This can result in OpenFGA reusing an earlier cached result for a different request. Users are affected if the model has relations which rely on condition evaluation andncaching is enabled. OpenFGA v1.13.1 contains a patch.
How severe is CVE-2026-33729?: CVE-2026-33729 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33729 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33729?: CVE-2026-33729 affects Openfga. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33729?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-33729 have an EU (EUVD) identifier?: Yes. CVE-2026-33729 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16507.
When was CVE-2026-33729 published?: CVE-2026-33729 was published on 2026-03-27 and last updated on 2026-06-17.

References

Affected products (1)

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

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