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Advisories

Vikunja before 2.6.0 TOTP Secret Disclosure via API

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severity
medium
date
Affecting

  • vikunja >= 0, < 2.6.0

CWE
  • CWE-522 Insufficiently Protected Credentials
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
0xcelien
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.

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