corosync vulnerabilities and fixes

Recent CVEs affecting corosync, with upgrade or downgrade steps. 2 tracked.

corosync has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-04-01. Highest priority: CVE-2026-35091 (score 58/100).

• CVE-2026-35091 HIGH 8.2 MITIGATE DOWNGRADE A flaw was found in Corosync
• CVE-2026-35092 HIGH 7.5 MITIGATE DOWNGRADE A flaw was found in Corosync

FAQ

How do I fix corosync 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 corosync being exploited right now?

None of the tracked corosync CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which corosync CVE should I patch first?

CVE-2026-35091 currently ranks highest (58/100): A flaw was found in Corosync.

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