CVE-2026-25885
Unauthenticated WebSocket Access Allows Message Injection in PolarLearn
Publication date: 2026-02-09
Last updated on: 2026-02-20
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| polarlearn | polarlearn | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-306 | The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. |
| CWE-285 | The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in PolarLearn versions 0-PRERELEASE-16 and earlier allows unauthenticated clients to access the group chat WebSocket at wss://polarlearn.nl/api/v1/ws without logging in.
An attacker can subscribe to any group chat by providing the group's UUID and can send messages to any group. The server accepts these messages and stores them in the group's chat content, meaning this is more than just a visual spam issue.
How can this vulnerability impact me? :
This vulnerability can lead to unauthorized access to group chats, allowing attackers to read and send messages without authentication.
Because messages sent by unauthenticated users are stored in the group chat content, this could lead to data integrity issues, unauthorized information disclosure, and potential disruption of communication within groups.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know