PatchTheCVEcloudstack vulnerabilities and fixes
Recent CVEs affecting cloudstack, with upgrade or downgrade steps. 2 tracked.
cloudstack has 2 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-05-08. Highest priority: CVE-2026-25199 (score 52/100).
- CVE-2026-25199 CRITICAL 9.1 UPGRADE Instances deployed via the Proxmox extension allow unauthorized access to instances belonging to other tenants
- CVE-2026-25077 HIGH 8.8 UPGRADE Account users are allowed by default to register templates to be downloaded directly to the primary storage fo
FAQ
How do I fix cloudstack vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is cloudstack being exploited right now?
None of the tracked cloudstack CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which cloudstack CVE should I patch first?
CVE-2026-25199 currently ranks highest (52/100): Instances deployed via the Proxmox extension allow unauthorized access to instances belonging to other tenants.