cvedb.io
CVE-2021-43979
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2021-11-17T19:15:09.220 · Last modified 2026-06-17T04:11:43.980

Summary

Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control. The data replication mechanism allows policies to access the Kubernetes cluster state. During data replication, OPA/Gatekeeper does not wait for the replication to finish before processing a request, which might cause inconsistencies between the replicated resources in OPA/Gatekeeper and the resources actually present in the cluster. Inconsistency can later be reflected in a policy bypass. NOTE: the vendor disagrees that this is a vulnerability, because Kubernetes states are only eventually consistent

Affected products

openpolicyagent — gatekeeper

Does this affect you?

Add your gear to cvedb and we'll alert you only when openpolicyagent ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.