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CVE-2026-33473— Vikunja has TOTP Reuse During Validity Window

CVSS 5.7 · Medium EPSS 0.03% · P10
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I. Basic Information for CVE-2026-33473

Vulnerability Information
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Vulnerability Title
Vikunja has TOTP Reuse During Validity Window
Source: NVD (National Vulnerability Database)
Vulnerability Description
Vikunja is an open-source self-hosted task management platform. Starting in version 0.13 and prior to version 2.2.1, any user that has enabled 2FA can have their TOTP reused during the standard 30 second validity window. Version 2.2.1 patches the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vikunja 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vikunja是Vikunja开源的一个待办事项应用程序。 Vikunja 0.13版本至2.2.1之前版本存在授权问题漏洞，该漏洞源于启用双因素认证的用户可在标准30秒有效期内重复使用TOTP。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
go-vikunjavikunja >= 0.13, < 2.2.1 -

II. Public POCs for CVE-2026-33473

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III. Intelligence Information for CVE-2026-33473

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Same Patch Batch · go-vikunja · 2026-03-24 · 16 CVEs total

CVE-2026-333168.1 HIGHVikunja’s Improper Access Control Enables Bypass of Administrator-Imposed Account Disablem
CVE-2026-336788.1 HIGHVikunja has IDOR in Task Attachment ReadOne Allows Cross-Project File Access and Deletion
CVE-2026-336807.5 HIGHVikunja Vulnerable to Link Share Hash Disclosure via ReadAll Endpoint Enables Permission E
CVE-2026-334746.5 MEDIUMVikunja Affected by DoS via Image Preview Generation
CVE-2026-336776.5 MEDIUMWebhook BasicAuth Credentials Exposed to Read-Only Project Collaborators via API
CVE-2026-336766.5 MEDIUMVikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorizatio
CVE-2026-336756.4 MEDIUMVikunja has SSRF via Todoist/Trello Migration File Attachment URLs that Allows Reading Int
CVE-2026-336796.4 MEDIUMVikunja has SSRF via OpenID Connect Avatar Download that Bypasses Webhook SSRF Protections
CVE-2026-33315Vikunja has a 2FA Bypass via Caldav Basic Auth
CVE-2026-33313Vikunja has an IDOR in Task Comments Allows Reading Arbitrary Comments
CVE-2026-33335Vikunja Desktop allows arbitrary local application invocation via unvalidated shell.openEx
CVE-2026-33334Vikunja Desktop: Any frontend XSS escalates to Remote Code Execution due to nodeIntegratio
CVE-2026-33336Vikunja Desktop vulnerable to Remote Code Execution via same-window navigation
CVE-2026-33668Vikunja Allows Disabled/Locked User Accounts to Authenticate via API Tokens, CalDAV, and O
CVE-2026-33700Vikunja has a Link Share Delete IDOR — Missing Project Ownership Check Allows Cross-Projec

IV. Related Vulnerabilities

Same product: vikunja
Same vendor: go-vikunja
Same weakness: CWE-287

V. Comments for CVE-2026-33473

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