CVE-2026-111921

MEDIUM 5.4

Vikunja 0.13.0 before 2.7.0 Incorrect Authorization in Link Share Deletion

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	go-vikunja
Product	vikunja
Published	Oct 17, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Affected Versions

go-vikunja / vikunja

0.13.0 < 2.7.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-fmmf-xq98-g327 vulncheck.com: https://www.vulncheck.com/advisories/vikunja-0.13.0-before-2.7.0-incorrect-authorization-in-link-share-deletion