CVE-2026-27616

Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to upload SVG files as task attachments. SVG is an XML-based format that supports JavaScript execution through elements such as <script> tags or event handlers like onload. The application does not sanitize SVG content before storing it. When the uploaded SVG file is accessed via its direct URL, it is rendered inline in the browser under the application's origin. As a result, embedded JavaScript executes in the context of the authenticated user. Because the authentication token is stored in localStorage, it is accessible via JavaScript and can be retrieved by a malicious payload. Version 2.0.0 patches this issue.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-7jp5-298q-jg98	Vendor Advisory
https://github.com/user-attachments/files/25414870/Stored.XSS.Proof.of.concept.pdf	Exploit Third Party Advisory
https://vikunja.io/changelog/vikunja-v2.0.0-was-released	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-25 22:16

Updated : 2026-03-05 16:35

NVD link : CVE-2026-27616

Mitre link : CVE-2026-27616

CVE.ORG link : CVE-2026-27616

JSON object : View

Products Affected

vikunja

vikunja

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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