Those requiring a CVE record, see: CVE-2026-33721 https://www.cve.org/CVERecord?id=CVE-2026-33721

-jeff


On 2026-03-23 4:36 p.m., Jeff McKenna via MapServer-users wrote:
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,



--
Jeff McKenna
GatewayGeo: Developers of MS4W, & offering MapServer Consulting/Dev
co-founder of FOSS4G
http://gatewaygeo.com/






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