CVE-2026-54354 MapServer: PostGIS Numeric Filter Value SQL Injection in MapServer Runtime Query Translation
Unauthenticated attackers can inject SQL via numeric filter inputs in MapServer PostGIS layers to read data or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54354?
CVE-2026-54354 is a high-severity SQL injection vulnerability in MapServer, published on 17 Sep 2026. 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 8.6.4, MapServer's PostGIS runtime filter translation in src/mappostgis.cpp and msPostGISLayerTranslateFilter() treats a filteritem as numeric when CONNECTIONTYPE POSTGIS and metadata such as gml_<item>_type=Integer are configured, but it does not verify that attacker-controlled CGI qstring or OGC API Features featureId input is a numeric literal. The unquoted input is concatenated into the generated PostgreSQL/PostGIS predicate, allowing an unauthenticated remote attacker with access to an affected query endpoint to bypass predicates, enumerate unintended records, perform boolean-based or time-based SQL injection, and increase database load. The issue does not by itself establish database modification capabilities. This issue is fixed in version 8.6.4.
Weakness: CWE-89
Which versions are affected by CVE-2026-54354?
How do I fix CVE-2026-54354?
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-2026-54354 being exploited?
There is no known exploitation of CVE-2026-54354 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-54354, GHSA-xp29-8wp5-wc3p, UBUNTU-CVE-2026-54354.