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Advisories

Vikunja 2.6.0 Broken Access Control via Inherited Project Permissions

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Severity
medium
Date
Affecting

  • vikunja 2.6.0

CWE
  • CWE-269 Improper Privilege Management
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
Viv3kGupt4
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.

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