CVE-2026-111920CWE-269privilege-escalation

CVE-2026-111920

Medium · published October 17, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
4.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
5.3 · 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
EPSS
0.00158 · 4.6th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-10-17T23:16Z
References (3)
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pjr3-86v4-5p7w · [email protected]https://www.vulncheck.com/advisories/vikunja-2.6.0-broken-access-control-via-inherited-project-permissions · [email protected]https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pjr3-86v4-5p7w · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 19 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 17 OCT 18:46Z
    Vikunja 2.6.0 Broken Access Control via Inherited Project Permissions
    cvelistv5
  • 17 OCT 18:46Z
    Vikunja 2.6.0 Broken Access Control via Inherited Project Permissions
    cvelistv5