PT-2026-30983 · Polarnl · Polarlearn

Published 2026-04-07 · Updated 2026-04-07 · CVE-2026-39322

NVD

CVSS v4.0

9.2

Critical

AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, POST /api/v1/auth/sign-in creates a valid session for banned accounts before verifying the supplied password. That session is then accepted across authenticated /api routes, enabling account data access and authenticated actions as the banned user.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2026-39322

Affected Products

Polarlearn

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-39322 · Security Note
• https://github.com/polarnl/PolarLearn/security/advisories/GHSA-9vx4-7ww7-4cf5 · Note