CVE-2026-27116

MEDIUM

6.1

Description

Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, a reflected HTML injection vulnerability exists in the Projects module where the `filter` URL parameter is rendered into the DOM without output encoding when the user clicks "Filter." While `<script>` and `<iframe>` are blocked, `<svg>`, `<a>`, and formatting tags (`<h1>`, `<b>`, `<u>`) render without restriction — enabling SVG-based phishing buttons, external redirect links, and content spoofing within the trusted application origin. Version 2.0.0 fixes this issue.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/25/2026

Last Modified3/5/2026

Sourcenvd

Honeypot Sightings0

Affected Products

vikunja:vikunja

Weaknesses (CWE)

CWE-79CWE-80

References

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-4qgr-4h56-8895(security-advisories@github.com)

https://vikunja.io/changelog/vikunja-v2.0.0-was-released(security-advisories@github.com)

IOC Correlations

No correlations recorded

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