CVE-2026-25885 (GCVE-0-2026-25885)
Vulnerability from cvelistv5 – Published: 2026-02-09 21:15 – Updated: 2026-02-10 15:58
VLAI
EPSS
VEX
Title
PolarLearn allows Unauthenticated WebSocket access allows subscribing to and posting in arbitrary group chats
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-10 15:39 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/polarnl/PolarLearn/security/ad… | x_refsource_CONFIRM |
| https://github.com/polarnl/PolarLearn/commit/3ba5… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| polarnl | PolarLearn |
Affected:
< 0-PRERELEASE-16
|
guessed |
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