[mapserver-announce] security release available: MapServer 8.6.1

Jeff McKenna jmckenna at gatewaygeomatics.com
Mon Mar 23 12:38:30 PDT 2026


The MapServer team announces the immediate availability of security 
release of 8.6.1

This release contains a fix for a security flaw in the SLD parser. See 
the changelog for the list of changes ( 
https://mapserver.org/development/changelog/changelog-8-6.html#changelog-8-6-1 
). You may also review this specific Security Advisory ( 
https://github.com/MapServer/MapServer/security/advisories/GHSA-cv4m-mr84-fgjp 
) as well as MapServer’s Security Policy ( 
https://github.com/MapServer/MapServer/blob/main/SECURITY.md ). Please 
note: as security support for the 7.6 branch has ended, and branches 
8.4, 8.2 & 8.0 are not supported, all users are strongly encouraged to 
upgrade to the MapServer 8.6.1 release.

Here is the direct download for today's release:

  - tar.gz: https://download.osgeo.org/mapserver/mapserver-8.6.1.tar.gz
  - zip: https://download.osgeo.org/mapserver/mapserver-8.6.1.zip

(all services on demo.mapserver.org have been upgraded as well)

Thanks,

-- 
The MapServer Team








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