CVE-2026-25885 | BDVDB-2026-314550 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-02-09Record published in the CVE List.
2. Version 22026-02-10Most recent update recorded in the CVE List.