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CVE-2026-27116— Vikunja has Reflected HTML Injection via filter Parameter in Projects Module

Quick assessment

Affected
go-vikunja vikunja
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vikunja是Vikunja开源的一个待办事项应用程序。 Vikunja 2.0.0之前版本存在安全漏洞，该漏洞源于Projects模块中filter参数未进行输出编码，可能导致反射型HTML注入。

CVSS 6.1 · Medium EPSS 0.28% · P19
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I. Basic Information for CVE-2026-27116

Vulnerability Information
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Vulnerability Title
Vikunja has Reflected HTML Injection via filter Parameter in Projects Module
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Vikunja 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vikunja是Vikunja开源的一个待办事项应用程序。 Vikunja 2.0.0之前版本存在安全漏洞，该漏洞源于Projects模块中filter参数未进行输出编码，可能导致反射型HTML注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
go-vikunja vikunja < 2.0.0 -

II. Public POCs for CVE-2026-27116

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III. Intelligence Information for CVE-2026-27116

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Vendor Advisories for CVE-2026-27116 (1)

Vendor Pages for CVE-2026-27116 (1)

Same Patch Batch · go-vikunja · 2026-02-25 · 4 CVEs total

CVE-2026-27575 9.1 CRITICAL Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change
CVE-2026-27616 7.3 HIGH Vikunja Vulnerable to Stored Cross-Site Scripting (XSS) via Unsanitized SVG Attachment Upl
CVE-2026-27819 7.2 HIGH Vikunja has Path Traversal in CLI Restore

IV. Related Vulnerabilities

Same product: vikunja
Same vendor: go-vikunja
Same weakness: CWE-79

V. Comments for CVE-2026-27116

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