CISA Orders Feds to Patch Active GeoServer XXE Vulnerability Exploitation
In June 2024, U.S. federal agencies were ordered by CISA to immediately patch a critical vulnerability in GeoServer, an open-source geospatial server widely deployed across government networks. Threat actors were observed actively exploiting an XML External Entity (XXE) injection flaw that allows attackers to access sensitive files, exfiltrate data, and potentially pivot within federal environments. The exploitation, which was discovered in the wild, underscores how quickly attackers can weaponize unpatched vulnerabilities to compromise mission-critical public sector infrastructure, putting sensitive government information at risk. This incident highlights a recent spike in the exploitation of internet-facing open-source software by both cybercriminal and nation-state groups. With regulatory pressure mounting around software supply chain risks and zero-day response times, such vulnerabilities remain a primary vehicle for initial access in sophisticated cyberattacks.
Kill Chain