CVE-2026-111921

Vikunja 0.13.0 before 2.7.0 Incorrect Authorization in Link Share Deletion

MEDIUM
5.4
CVSS Score
Published: October 17, 2026 at 06:46 PM UTC
Updated: October 21, 2026 at 10:16 PM UTC
1 product affected across 1 vendorVikunja

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.13.0
Vendor states this is fixed in 2.7.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-863

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