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CVE-2026-33474— Vikunja Affected by DoS via Image Preview Generation

CVSS 6.5 · Medium EPSS 0.05% · P17
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I. Basic Information for CVE-2026-33474

Vulnerability Information
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Vulnerability Title
Vikunja Affected by DoS via Image Preview Generation
Source: NVD (National Vulnerability Database)
Vulnerability Description
Vikunja is an open-source self-hosted task management platform. Starting in version 1.0.0-rc0 and prior to version 2.2.0, unbounded image decoding and resizing during preview generation lets an attacker exhaust CPU and memory with highly compressed but extremely large-dimension images. Version 2.2.0 patches the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vikunja 资源管理错误漏洞
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 1.0.0-rc0版本至2.2.0之前版本存在资源管理错误漏洞，该漏洞源于预览生成期间无限制的图像解码和调整大小，可能导致CPU和内存耗尽。
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 >= 1.0.0-rc0, < 2.2.0 -

II. Public POCs for CVE-2026-33474

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III. Intelligence Information for CVE-2026-33474

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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-2026-336776.5 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-2026-334735.7 MEDIUMVikunja has TOTP Reuse During Validity Window
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-400

V. Comments for CVE-2026-33474

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