CVE-2026-57458High· 8.1▾ TwilightVikunja is an open-source self-hosted task management platform. In version 2.3.0, a scoped API token limited to the `oauth.authorize` permission can call `POST /api/v1/oauth/authorize`, obtain an OAuth authorization code, and exchange th…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Vikunja is an open-source self-hosted task management platform. In version 2.3.0, a scoped API token limited to the oauth.authorize permission can call POST /api/v1/oauth/authorize, obtain an OAuth authorization code, and exchange the code at POST /api/v1/oauth/token for a normal bearer JSON Web Token (JWT) and refresh token. The resulting credentials are not restricted by the original API token's permissions, allowing access to routes outside its declared scope for the same user. Version 2.4.0 fixes the vulnerability.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
code.vikunja.io/api = 2.3.0Patched in:
code.vikunja.io/api 2.4.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-62367HighVikunja is an open-source self-hosted task management platform
CVE-2026-62376High· 8.1Vikunja is an open-source self-hosted task management platform
GHSA-pjr3-86v4-5p7wMedium· 5.4Vikunja: Explicit lower-permission share on a sub-project is silently overridden by an inherited parent permission (broken access control / privilege-management regression in v2.6.0)
CVE-2026-54766MediumVikunja is an open-source self-hosted task management platform
CVE-2026-55064Medium· 4.3Vikunja is an open-source self-hosted task management platform
CVE-2026-55065High· 8.1Vikunja is an open-source self-hosted task management platform