What is CVE-2026-25126?

CVE-2026-25126 is a high-severity vulnerability in Polarnl Polarlearn, classified under Improper Input Validation. CVSS score: 7.1/10. Published 2026-01-29.

How severe is CVE-2026-25126?

High severity. CVSS v3 base score is 7.1 out of 10.

Improper input validation in Polarnl Polarlearn

CVE-2026-25126

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…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.000 (7.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.

Affected products

Polarnl Polarlearn — versions < 0-PRERELEASE-15

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

https://github.com/polarnl/PolarLearn/security/advisories/GHSA-ghpx-5w2p-p3qp (x_refsource_CONFIRM)
https://github.com/polarnl/PolarLearn/commit/e6227d94d0e53e854f6a46480db8cd1051184d41 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-25126?: CVE-2026-25126 is a high-severity vulnerability in Polarnl Polarlearn, classified under Improper Input Validation. CVSS score: 7.1/10. Published 2026-01-29.
How severe is CVE-2026-25126?: High severity. CVSS v3 base score is 7.1 out of 10.