Medium severity5.4NVD Advisory· Published Oct 17, 2026

CVE-2026-111921

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.

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Affected products

Go Vikunja/Vikunjallm-fuzzy
Range: <2.7.0
Vikunja/Vikunjallm-fuzzy
Range: <2.7.0

Patches

Vulnerability mechanics

References

github.com/go-vikunja/vikunja/security/advisories/GHSA-fmmf-xq98-g327nvd
www.vulncheck.com/advisories/vikunja-0.13.0-before-2.7.0-incorrect-authorization-in-link-share-deletionnvd

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cvss	0.351
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000