Threats Tagged 'cve-2026-25885'

CVE-2026-25885 is a critical improper authorization vulnerability in PolarLearn versions prior to 0-PRERELEASE-16. It allows unauthenticated attackers to connect to the group chat WebSocket endpoint and subscribe to or send messages in any group chat by supplying a group UUID. This flaw enables attackers to inject unauthorized messages that are stored persistently, not just displayed temporarily, leading to potential misinformation, disruption, or data integrity issues. The vulnerability requires no authentication or user interaction and can be exploited remotely over the network. The CVSS 4.0 base score is 10, reflecting its critical severity due to full network exploitability and high impact on confidentiality, integrity, and availability. European organizations using PolarLearn for educational or collaborative purposes are at risk of unauthorized data manipulation and privacy breaches. Mitigation involves upgrading to versions beyond 0-PRERELEASE-16 once available or implementing strict access controls and WebSocket authentication proxies. Countries with significant adoption of PolarLearn or similar open-source educational platforms, such as the Netherlands, Germany, France, and the UK, are most likely to be affected. Given the critical nature and ease of exploitation, immediate attention is required to prevent abuse and maintain trust in collaborative learning environments.

CriticalVulnerabilityNetherlandsGermanyFrance+3#cve#cve-2026-25885#cwe-285