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CVE-2026-25885criticalCWE-285CWE-306

PolarLearn allows Unauthenticated WebSocket access allows subscribing to and posting in arbitrary group chats

28Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 10epss 0.3%
probabilidad de explotación
0.3%top 77% de las CVE
explotación observada
noninguna fuente lo reporta
PolarLearn is a free and open-source learning program. In 0-PRERELEASE-16 and earlier, the group chat WebSocket at wss://polarlearn.nl/api/v1/ws can be used without logging in. An unauthenticated client can subscribe to any group chat by providing a group UUID, and can also send messages to any group. The server accepts the message and stores it in the group’s chatContent, so this is not just a visual spam issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
Productos afectados
polarnl · PolarLearn