Vulnerability DatabaseCVE-2026-111921
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CVE-2026-111921
Published:October 17, 2026
Updated:October 18, 2026
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.
Affected Packages
https://github.com/go-vikunja/vikunja.git (GITHUB):
Affected version(s) =v2.6.0 <v2.7.0
Fix Suggestion:
Update to version v2.7.0
Related Resources (3)
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-fmmf-xq98-g327
https://nvd.nist.gov/vuln/detail/CVE-2026-111921
https://www.vulncheck.com/advisories/vikunja-0.13.0-before-2.7.0-incorrect-authorization-in-link-share-deletion
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Incorrect Authorization
CWE-863