CVE-2026-91982
MEDIUM
NVD
CVSS Score
4.3
Severity
MEDIUM
Published
Sep 15, 2026
Vendor
unknown
Description
Vikunja before 2.6.0 continues to expose the raw TOTP shared secret after enrollment through the GET /api/v1/user/settings/totp and /api/v1/user/settings/totp/qrcode endpoints without re-authentication. Attackers with a valid access token can read the secret, import it into their own authenticator, and generate valid codes indefinitely to defeat the second factor and enable account takeover.