CVE-2026-56765

Summary (CVE-2026-56765): Vikunja prior to 2.2.1 contains two related authorization flaws. First, the LinkSharing.ReadAll endpoint exposes share hashes to users with read access, enabling permission escalation to admin-level shares. Second, the GetTaskAttachment endpoint performs permission check...

GO-2026-5650 Vikunja: Scoped API tokens with projects.background permission can delete project backgrounds in code.vikunja.io/api

Vikunja: Scoped API tokens with projects.background permission can delete project backgrounds in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive...

GO-2026-5608 Vikunja has Algorithmic Complexity DoS in Repeating Task Handler in code.vikunja.io/api

Vikunja has Algorithmic Complexity DoS in Repeating Task Handler in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability...

GO-2026-5582 Vikunja has File Size Limit Bypass via Vikunja Import in code.vikunja.io/api

Vikunja has File Size Limit Bypass via Vikunja Import in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability scanners, please...

GO-2026-5428 Vikunja has Broken Access Control on Label Read via SQL Operator Precedence Bug in code.vikunja.io/api

Vikunja has Broken Access Control on Label Read via SQL Operator Precedence Bug in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from...

GO-2026-5362 Vikunja Vulnerable to TOTP Brute-Force Due to Non-Functional Account Lockout in code.vikunja.io/api

Vikunja Vulnerable to TOTP Brute-Force Due to Non-Functional Account Lockout in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from...

GO-2026-5276 Vikunja: Link Share JWT tokens remain valid for 72 hours after share deletion or permission downgrade in code.vikunja.io/api

Vikunja: Link Share JWT tokens remain valid for 72 hours after share deletion or permission downgrade in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing...

GO-2026-5258 Vikunja has TOTP Two-Factor Authentication Bypass via OIDC Login Path in code.vikunja.io/api

Vikunja has TOTP Two-Factor Authentication Bypass via OIDC Login Path in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability...

GO-2026-5111 Vikunja has HTML Injection via Task Titles in Overdue Email Notifications in code.vikunja.io/api

Vikunja has HTML Injection via Task Titles in Overdue Email Notifications in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from...

GO-2026-5114 Vikunja Missing Authorization on CalDAV Task Read in code.vikunja.io/api

Vikunja Missing Authorization on CalDAV Task Read in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability scanners, please...

CVE-2026-35599

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the addRepeatIntervalToTime function uses an On loop that advances a date by the task's RepeatAfter duration until it exceeds the current time. By creating a repeating task with a 1-second interval and a due date far ...

GO-2026-4952 Vikunja vulnerable to Privilege Escalation via Project Reparenting in code.vikunja.io/api

Vikunja vulnerable to Privilege Escalation via Project Reparenting in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability...

GO-2026-4951 Vikunja has iCalendar Property Injection via CRLF in CalDAV Task Output in code.vikunja.io/api

Vikunja has iCalendar Property Injection via CRLF in CalDAV Task Output in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerabilit...

PT-2026-42365

Vikunja vulnerable to Privilege Escalation via Project Reparenting in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability...

PT-2026-42364

Vikunja has iCalendar Property Injection via CRLF in CalDAV Task Output in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerabilit...

CVE-2026-40103

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background, while a token with only...

CVE-2026-35600

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday which allows and tags,...

CVE-2026-35602

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the Vikunja file import endpoint uses the attacker-controlled Size field from the JSON metadata inside the import zip instead of the actual decompressed file content length for the file size enforcement check. By...

CVE-2026-35596

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the hasAccessToLabel function contains a SQL operator precedence bug that allows any authenticated user to read any label that has at least one task association, regardless of project access. Label titles, description...

CVE-2026-35598

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV GetResource and GetResourcesByList methods fetch tasks by UID from the database without verifying that the authenticated user has access to the task's project. Any authenticated CalDAV user who knows or...