CVE-2026-91982
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.
Published:Sep 15, 2026
Last Modified:Sep 17, 2026
EPS:Sep 15, 2026
EPSS Score:0.00276
CVSS Score:4.3
Affected Products
Vendor
Product
Action
Vendor
Go-vikunja
Product
Vikunja
Go-vikunja
Vikunja
Vendor
Vikunja
Product
Vikunja
Vikunja
Vikunja
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
