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5.0
CVE-2026-10533EXPLOITED
red hat · openshift container

Openshift: openshift: non-admin user can bypass resourcequota and flood etcd with events causing cluster-wide api degradation

Description

A flaw was found in OpenShift Container Platform. Completed pods with restartPolicy: Never do not count toward ResourceQuota pod limits, and Kubernetes events are not quota-scoped. A non-privileged user who can create pods in a namespace can exploit this to generate a large volume of events that accumulate in etcd, causing API server performance degradation across the cluster.

Affected Products

VendorProductVersions
red hatopenshift container—

Also Affects

Downstream vendors/products affected by this vulnerability

VendorProductSourceConfidence
red hatopenshiftcert_advisory90%

References

  • https://access.redhat.com/security/cve/CVE-2026-10533(vdb-entry, x_refsource_REDHAT)
  • https://bugzilla.redhat.com/show_bug.cgi?id=2483727(issue-tracking, x_refsource_REDHAT)

Related News (4 articles)

Tier B
BSI Advisories4h ago
[UPDATE] [hoch] Red Hat OpenShift Container Platform: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit den Rechten des Dienstes
→ No new info (linked only)
Tier B
BSI Advisories6d ago
[NEU] [UNGEPATCHT] [mittel] Red Hat OpenShift: Schwachstelle ermöglicht Denial of Service
→ No new info (linked only)
Tier C
VulDB6d ago
CVE-2026-10533 | Red Hat OpenShift Container Platform 4 allocation of resources
→ No new info (linked only)
Tier B
BSI Advisories35d ago
[UPDATE] [mittel] Red Hat OpenShift Container Platform: Mehrere Schwachstellen ermöglichen Denial of Service
→ No new info (linked only)
CVSS 3.15.0 NONE
CISA KEV❌ No
Actively exploited✅ Yes
CWECWE-770
PublishedJun 1, 2026
Last enriched6d agov3
Tags
Denial of Servicedenial of serviceremote exploitanonymous attacker
Trending Score52
Source articles4
Independent2
Info Completeness9/14
Missing: epss, kev, patch, iocs, mitre_attack

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Jun 1, 2026
Discovered by ZDM
Jun 1, 2026
Updated: description, affectedVersions, severity
Jun 1, 2026
Updated: severity, exploitAvailable, activelyExploited, tags
Jun 2, 2026
Actively Exploited
Jun 2, 2026
Exploit Available
Jun 2, 2026

Version History

v3
Last enriched 6d ago
v3Tier B6d ago

Updated severity to HIGH, marked exploit as available, and added Denial of Service tag.

severityexploitAvailableactivelyExploitedtags
via BSI Advisories
v2Tier C6d ago

Updated description with new details, added affected version 4, changed severity to HIGH, and noted that no exploit is available.

descriptionaffectedVersionsseverity
via VulDB
v16d ago

Initial creation