CVE-2026-25126

HIGH

7.1

Description

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.

Details CVE

Score CVSS v3.17.1

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie1/29/2026

Derniere modification2/20/2026

Sourcenvd

Observations honeypot0

Produits affectes

polarlearn:polarlearn

Faiblesses (CWE)

CWE-20

References

https://github.com/polarnl/PolarLearn/commit/e6227d94d0e53e854f6a46480db8cd1051184d41(security-advisories@github.com)

https://github.com/polarnl/PolarLearn/security/advisories/GHSA-ghpx-5w2p-p3qp(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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