Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday (which allows <a> and <img> tags), injected Markdown constructs produce phishing links and tracking pixels in legitimate notification emails. This vulnerability is fixed in 2.3.0.
Published: 2026-04-10
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-45q4-x4r9-8fqj Vikunja has HTML Injection via Task Titles in Overdue Email Notifications
History

Fri, 10 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Description Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday (which allows <a> and <img> tags), injected Markdown constructs produce phishing links and tracking pixels in legitimate notification emails. This vulnerability is fixed in 2.3.0.
Title Vikunja has HTML Injection via Task Titles in Overdue Email Notifications
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-10T16:07:07.846Z

Reserved: 2026-04-03T21:25:12.162Z

Link: CVE-2026-35600

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-10T17:17:03.680

Modified: 2026-04-10T17:17:03.680

Link: CVE-2026-35600

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses