What is the CVSS score of CVE-2026-27116?

CVE-2026-27116 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Vikunja are affected by CVE-2026-27116?

Organizations using Vikunja should be aware of moderate risk from CVE-2026-27116, a cross-site scripting vulnerability rated CVSS 6.1.

Is there a public PoC exploit available for CVE-2026-27116?

Yes, a public proof-of-concept exploit is available for CVE-2026-27116. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-27116?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Vikunja CVE-2026-27116

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-25 security-advisories@github.com

GHSA-4qgr-4h56-8895

XSS Vikunja Suse

6.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.1 MEDIUM

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

SUSE

MEDIUM

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 05, 2026 - 17:22 vuln.today

Public exploit code

CVE Published

Feb 25, 2026 - 22:16 nvd

MEDIUM 6.1

DescriptionGitHub Advisory

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.

AnalysisAI

Vikunja is an open-source self-hosted task management platform. [CVSS 6.1 MEDIUM]

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the Projects component of Vikunja. 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 t

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.