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CVE-2026-111921GHSA-fmmf-xq98-g327GO-2026-6730

Vikunja 0.13.0 before 2.7.0 Incorrect Authorization in Link Share Deletion

go-vikunja vikunjaGoLibraries & packages
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 21 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.7.0Fixed versionCVE List
Published17 Oct 2026Updated 21 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Vikunja 0.13.0 before 2.7.0 contains an incorrect authorization vulnerability that allows project members with Write permission to delete admin-tier link shares because the delete permission check reads an unloaded share object. Attackers can send DELETE requests to the v1 or v2 projects shares endpoints with sequential share IDs to revoke admin links and invalidate existing share sessions.

Text from CVE List

Affected versions 3

  • vikunjaaffected: 0.13.0 before 2.7.0CVE List
  • vikunjaunaffected: 2.7.0CVE List
  • code.vikunja.io/api, Gofrom 0.13.0, through 2.6.0OSV

References 2