EUVD-2026-78653
GHSA-jmr8-r558-3jhx
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (VulnCheck) · only source for this CVE.
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Vikunja releases before 2.6.0 return the raw TOTP shared secret from the GET /api/v1/user/settings/totp and /api/v1/user/settings/totp/qrcode endpoints without demanding re-authentication, so anyone holding a valid access token can clone the victim's second factor. Because the exposed seed lets an attacker generate valid codes indefinitely, a hijacked session token can be converted into durable account takeover that survives password changes but not TOTP secret rotation. …
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Weak password policy in Vikunja task management before 2.0.0 allows users to set trivially guessable passwords. PoC avai
Stored cross-site scripting (XSS) in Vikunja prior to version 2.0.0 allows authenticated attackers to steal authenticati
Vikunja before version 2.0.0 contains a path traversal vulnerability in its backup restoration function that fails to va
Vikunja is an open-source self-hosted task management platform. [CVSS 6.1 MEDIUM]
Business logic vulnerability in Vikunja task management platform before 2.1.0 allows incomplete resource cleanup, potent
Cross-tenant information disclosure in the self-hosted task manager Vikunja (0.24.0 through 2.3.0) lets a holder of any
Instance-wide data breach in Vikunja before 2.2.1 lets remote attackers exfiltrate and destroy every file attachment acr
Vikunja prior to 2.6.0 leaks the secret hash that backs a project's link shares through its single-share read endpoint,
Vikunja instances before 2.6.0 expose CalDAV BasicAuth endpoints (/dav, /.well-known, and /feeds) that are not covered b
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Principal type confusion in Vikunja (versions 0.22.0-2.3.0) allows an authenticated low-privilege attacker to fully cont
Vikunja, an open-source self-hosted task management platform, contains an insecure direct object reference (IDOR) vulner
Same weakness CWE-522 – Insufficiently Protected Credentials
View allSame technique Information Disclosure
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External POC / Exploit Code
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