EUVD-2026-14907Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionGitHub Advisory
Vikunja is an open-source self-hosted task management platform. Starting in version 0.21.0 and prior to version 2.2.0, the Vikunja Desktop Electron wrapper enables nodeIntegration in the renderer process without contextIsolation or sandbox. This means any cross-site scripting (XSS) vulnerability in the Vikunja web frontend -- present or future -- automatically escalates to full remote code execution on the victim's machine, as injected scripts gain access to Node.js APIs. Version 2.2.0 fixes the issue.
AnalysisAI
The Vikunja Desktop Electron wrapper enables Node.js integration in the renderer process without proper context isolation or sandboxing, allowing any cross-site scripting vulnerability in the web frontend to escalate directly to remote code execution on the victim's machine. Vikunja versions 0.21.0 through 2.1.x are affected, as confirmed by CPE cpe:2.3:a:go-vikunja:vikunja. An attacker exploiting an XSS flaw gains full access to Node.js APIs and the underlying operating system, making this a critical privilege escalation from web-based XSS to system-level RCE.
Technical ContextAI
Vikunja is an open-source, self-hosted task management platform built with a web frontend and packaged via Electron for desktop deployment. Electron's nodeIntegration setting, when enabled without contextIsolation or sandbox protections, exposes Node.js APIs directly to renderer processes. This violates the Electron security model, which is designed to isolate untrusted content (web pages) from powerful system APIs. The vulnerability is rooted in CWE-94 (Improper Control of Generation of Code), as injected JavaScript code gains uncontrolled access to Node.js process capabilities. Any XSS flaw in the Vikunja web application—whether present in versions 0.21.0 through 2.1.x or discovered in the future—automatically becomes code injection into a process with system privileges, enabling attackers to read files, execute commands, and compromise the host machine.
RemediationAI
Immediately upgrade Vikunja Desktop to version 2.2.0 or later, which disables nodeIntegration and enables contextIsolation and sandbox protections in the Electron renderer. Consult the vendor security advisory at https://github.com/go-vikunja/vikunja/security/advisories/GHSA-xh67-63q3-hf7g for detailed patch notes. For users unable to patch immediately, mitigate by restricting network access to the Vikunja instance to trusted users and networks, enforcing HTTPS with certificate pinning to prevent man-in-the-middle injection of XSS payloads, and disabling or uninstalling the vulnerable Electron desktop application in favor of accessing Vikunja through a web browser with appropriate content security policy controls. Monitor the Vikunja issue tracker for any outstanding XSS vulnerabilities in the web frontend that could be chained with this flaw.
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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