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Medium · 5.9 CVE-2026-123521 EUVD-2026-119406GHSA-8h95-jvr5-q5cg

Vikunja before 2.7.1 Password Brute-Force via TOTP Disable Endpoint

Published Nov 8, 2026 · Updated Nov 10, 2026 · Assigned by VulnCheck

Description

Vikunja before 2.7.1 contains an improper restriction of excessive authentication attempts vulnerability that allows session holders to brute-force account passwords via unthrottled re-authentication endpoints. Attackers with a stolen session can guess the password via /user/settings/totp/disable without lockout, then disable TOTP without a code for persistent account takeover.

Affected products

VendorProductAffectedFixed
go-vikunja vikunja < 2.7.1 2.7.1

References