PatchTheCVEmapserver vulnerabilities and fixes
Recent CVEs affecting mapserver, with upgrade or downgrade steps. 1 tracked.
mapserver has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-05-27. Highest priority: CVE-2026-45104 (score 42/100).
- CVE-2026-45104 HIGH 7.5 UPGRADE MapServer is a system for developing web-based GIS applications
FAQ
How do I fix mapserver 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 mapserver being exploited right now?
None of the tracked mapserver CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which mapserver CVE should I patch first?
CVE-2026-45104 currently ranks highest (42/100): MapServer is a system for developing web-based GIS applications.