geoserver — Vulnerabilities & Security Advisories 28

GeoServer is an open-source Java-based server designed to share and edit geospatial data, primarily serving as a standard-compliant OGC web feature server for GIS applications. Its widespread adoption in mapping infrastructure has made it a frequent target for attackers, resulting in 28 recorded CVEs. Historically, vulnerabilities have predominantly stemmed from insecure deserialization, leading to remote code execution, alongside cross-site scripting and improper access control issues that enable privilege escalation. A notable incident involved a critical RCE flaw in the WMS GetMap functionality, allowing unauthenticated attackers to execute arbitrary commands on the host system. The software’s reliance on complex Java dependencies often introduces supply chain risks, while its default configurations sometimes expose administrative interfaces to the public internet. These factors collectively highlight the necessity for rigorous patch management and strict network segmentation to mitigate exploitation of its known attack surface.