Attackers are actively exploiting a previously unknown SQL injection vulnerability in GeoServer, a widely used open-source geospatial data platform. This zero-day vulnerability, which affects the jsonArrayContains function, allows hackers to inject malicious code and potentially gain unauthorized access to sensitive data. GeoServer is utilized by various organizations across multiple industries, including government, defense, and education, making it a high-value target for attackers. The vulnerability was first disclosed by a bug bounty hunter on a social media platform, highlighting the need for prompt action to mitigate the threat. As the vulnerability remains unpatched, defenders are at a disadvantage, making it essential to implement temporary workarounds or monitoring to detect potential exploitation1. This zero-day exploitation poses a significant risk to organizations relying on GeoServer, emphasizing the importance of proactive security measures to prevent potential breaches.