CVE-2025-59431 MapServer - WFS XML Filter Query SQL injection

What is CVE-2025-59431?

CVE-2025-59431 is a high-severity SQL injection vulnerability in MapServer, published on 19 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

MapServer is a system for developing web-based GIS applications. Prior to 8.4.1, the XML Filter Query directive PropertyName is vulnerably to Boolean-based SQL injection. It seems like expression checking is bypassed by introducing double quote characters in the PropertyName. Allowing to manipulate backend database queries. This vulnerability is fixed in 8.4.1.

Weakness: CWE-89

Which versions are affected by CVE-2025-59431?

It affects 1 product.

Products include Osgeo Mapserver.

How do I fix CVE-2025-59431?

Upgrade to a fixed version.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2025-59431 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-59431 exists.

Other vulnerabilities in MapServer

• CVE-2010-2540 Security feature bypass in n/a Critical 10.0
• CVE-2009-2281 Memory corruption in n/a Critical 10.0
• CVE-2009-0839 Memory corruption in n/a Critical 10.0
• CVE-2009-0840 Memory corruption in n/a Critical 10.0
• CVE-2009-0841 Path traversal in n/a Critical 10.0

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-59431, GHSA-256m-rx4h-r55w, UBUNTU-CVE-2025-59431.