CVE-2026-111920
MEDIUM
CVSS 4.3
Published: 2026-10-17
Modified: 2026-10-18
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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.
Quick Facts
| CVE ID | CVE-2026-111920 |
| CVSS Score | 4.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| Published | 2026-10-17 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |