CVE-2026-33334Network attack vector

OS command execution via renderer Node.js integration

Published Mar 24, 2026 · Updated Mar 24, 2026

Code injection in Vikunja Desktop before 2.2.0 allows remote attackers to execute OS commands through a frontend XSS flaw. desktop/main.js creates the main BrowserWindow with Node.js integration enabled while isolation and sandboxing are absent, exposing Node.js modules to injected renderer scripts. Exploitation requires JavaScript execution through a separate frontend XSS and runs commands with the victim's OS-user privileges.

CVSS severity6.5
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Vikunja Desktop before 2.2.0 allows remote attackers to execute OS commands through a frontend XSS flaw. desktop/main.js creates the main BrowserWindow with Node.js integration enabled while isolation and sandboxing are absent, exposing Node.js modules to injected renderer scripts. Exploitation requires JavaScript execution through a separate frontend XSS and runs commands with the victim's OS-user privileges.

The record

CVE
CVE-2026-33334
Published
Mar 24, 2026
Updated
Mar 24, 2026
Vendor
Vikunja
Product
Vikunja
Classifications
CWE-94, CWE-79, CWE-269, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.21.0, < 2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vikunja · Vikunjaversion=>= 0.21.0, < 2.2.0

Published CVSS scores

9.6NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
6.5GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-269Improper Privilege Management
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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