CVE-2026-33336Public exploitNetwork attack vector

Code execution via unrestricted Node-enabled navigation

Published Mar 24, 2026 · Updated Mar 24, 2026

Code injection in Vikunja Desktop before 2.2.0 allows remote authenticated users to execute arbitrary code through a clicked crafted link. The Electron BrowserWindow enables nodeIntegration and permits same-window navigation to an attacker-controlled origin, where renderer JavaScript gains Node.js API access. An attacker must place a normal link in shared user-generated content and a victim must click it; commands then run with the victim's OS privileges.

CVSS severity6.5
Medium
EPSS probability1.11%
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 authenticated users to execute arbitrary code through a clicked crafted link. The Electron BrowserWindow enables nodeIntegration and permits same-window navigation to an attacker-controlled origin, where renderer JavaScript gains Node.js API access. An attacker must place a normal link in shared user-generated content and a victim must click it; commands then run with the victim's OS privileges.

The record

CVE
CVE-2026-33336
Published
Mar 24, 2026
Updated
Mar 24, 2026
Vendor
Vikunja
Product
Vikunja
Classifications
CWE-94, T1204.001
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

Vikunja · Vikunjaversion=>= 0.21.0, < 2.2.0

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1204.001Malicious Link

Public exploit references

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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