PatchTheCVEvarnish-software vulnerabilities
Recent CVEs affecting varnish-software products. 3 tracked.
varnish-software has 3 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 3. Most recent: 2026-04-12. Highest priority: CVE-2026-34475 (score 27/100).
- CVE-2026-34475 MEDIUM 5.4 UPGRADE UPGRADE Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mi
- CVE-2026-40395 MEDIUM 4.0 UPGRADE Varnish Enterprise before 6.0.16r12 allows a "workspace overflow" denial of service (daemon panic) for shared
- CVE-2026-40394 MEDIUM 4.0 UPGRADE DOWNGRADE Varnish Cache 9 before 9.0.1 and Varnish Enterprise before 6.0.16r11 allows a "workspace overflow" denial of s
FAQ
How do I fix varnish-software 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 varnish-software being exploited right now?
None of the tracked varnish-software CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which varnish-software CVE should I patch first?
CVE-2026-34475 currently ranks highest (27/100): Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mi.