Is CVE-2026-111920 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-111920?

CVE-2026-111920 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-111920

Description

Vikunja 2.6.0 contains a broken access control flaw in getProjectAccessForUser (pkg/models/project_access.go), which resolves a user's effective project permission as the maximum over the project tree, silently overriding explicit lower-permission shares on sub-projects. A collaborator with write access on a parent project but read-only access to a child project can modify the child project's tasks and content.