CVE-2026-123522 Details
Description
Vikunja before 2.7.1 contains an authorization bypass vulnerability that allows authenticated users to read any task by injecting a crafted task object into a no-op Kanban bucket move. Attackers can set task.id to a victim task and task.project_id to their own project, routing full task contents to their webhook and forging mention notifications.
An authorization bypass vulnerability has been identified in Vikunja versions prior to 2.7.1. This vulnerability allows authenticated users to read any task by injecting a crafted task object into a no-op Kanban bucket move. The exploitation involves setting the task.id to that of a victim's task and the task.project_id to the attacker's own project. As a result, the full contents of the task are routed to the attacker's webhook, while also forging mention notifications.
Users are advised to update Vikunja to version 2.7.1 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 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
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9 | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/vikunja-before-2.7.1-task-information-disclosure-via-kanban-bucket-move-webhook | [email protected] | AdvisoryVendor |
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] |
Volerion