CVE-2026-25222 - PolarLearn Affected by User Enumeration via Argon2 Timing Attack on Sign-In Endp...

CVE ID : CVE-2026-25222 Published : Feb. 2, 2026, 11:16 p.m. | 1 hour, 14 minutes ago Description : 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). Severity: 6.3 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...