CVE-2026-123503 Details
Description
Vikunja before 2.7.1 contains an improper authorization vulnerability in canDoBucket that allows users with project write access to delete buckets via a mismatched view ID. Attackers can request deletion through another view's bucket endpoint to bypass the last-bucket rule, leaving dangling default/done bucket references and inconsistent task buckets.
An improper authorization vulnerability has been identified in Vikunja versions prior to 2.7.1. The issue resides in the 'canDoBucket' function, where users with project write access can delete buckets by exploiting a mismatched view ID. This vulnerability allows deletion requests to be sent through another view's bucket endpoint, bypassing the last-bucket rule. As a result, the default or 'done' bucket references become inconsistent, leaving behind dangling references and disrupting task organization.
Users can update to Vikunja version 2.7.1 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 8, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Vikunja | <= 2.7.0 (semver) |
CPE
Remediation
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Change History
1 change record found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 8, 2026 | New CVE Received | [email protected] |