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CVE-2026-25126

🔴 HIGH

PolarLearn is a free and open-source learning program. Prior to version 0-PRERELEASE-15, the vote API route (`POST /api/v1/forum/vote`) trusts the JSON body’s `direction` value without runtime validat...

Published
Jan 29, 2026
Last Modified
Feb 04, 2026
Views
24
Bookmarks
0

Description

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PolarLearn is a free and open-source learning program. Prior to version 0-PRERELEASE-15, the vote API route (`POST /api/v1/forum/vote`) trusts the JSON body’s `direction` value without runtime validation. TypeScript types are not enforced at runtime, so an attacker can send arbitrary strings (e.g., `"x"`) as `direction`. Downstream (`VoteServer`) treats any non-`"up"` and non-`null` value as a downvote and persists the invalid value in `votes_data`. This can be exploited to bypass intended business logic. Version 0-PRERELEASE-15 fixes the vulnerability.

CVSS Scores

CVSS 3.1 7.1
7.1
HIGH
CVSS 2.0 7.1

References

github.com github.com

Additional Information

Source
security-advisories@github.com
State
Awaiting analysis

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