Vulnerability Description
PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery (CSRF). The application fails to implement and verify the state parameter during the authentication flow. This allows an attacker to pre-authenticate a session and trick a victim into logging into the attacker's account. Any data the victim then enters or academic progress they make is stored on the attacker's account, leading to data loss for the victim and information disclosure to the attacker.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Polarlearn | Polarlearn | - |
Related Weaknesses (CWE)
References
- https://github.com/polarnl/PolarLearn/commit/44669bbb5b647c7625f22dd82f3121c7d7bPatch
- https://github.com/polarnl/PolarLearn/security/advisories/GHSA-fhhm-574m-7rpwExploitVendor Advisory
FAQ
What is CVE-2026-25221?
CVE-2026-25221 is a vulnerability with a CVSS score of 8.1 (HIGH). PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forg...
How severe is CVE-2026-25221?
CVE-2026-25221 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25221?
Check the references section above for vendor advisories and patch information. Affected products include: Polarlearn Polarlearn.