CVE-2026-25222

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, a timing attack vulnerability in the sign-in process allows unauthenticated attackers to determine if a specific email address is registered on the platform. By measuring the response time of the login endpoint, an attacker can distinguish between valid and invalid email addresses. This occurs because the server only performs the computationally expensive Argon2 password hashing if the user exists in the database. Requests for existing users take significantly longer (~650ms) than requests for non-existent users (~160ms).

CVSS

No CVSS.

References

Link	Resource
https://github.com/polarnl/PolarLearn/commit/6c276855172c7310cce0df996cb47ffe0d886741
https://github.com/polarnl/PolarLearn/security/advisories/GHSA-wcr9-mvr9-4qh5

Configurations

No configuration.

History

No history.

Information

Published : 2026-02-02 23:16

Updated : 2026-02-03 16:44

NVD link : CVE-2026-25222

Mitre link : CVE-2026-25222

CVE.ORG link : CVE-2026-25222

JSON object : View

Products Affected

No product.

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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