How severe is CVE-2026-33334?

CVE-2026-33334 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33334 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33334?

CVE-2026-33334 affects Vikunja. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33334?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-33334 have an EU (EUVD) identifier?

Yes. CVE-2026-33334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14907.

When was CVE-2026-33334 published?

CVE-2026-33334 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33334

CVE-2026-33334 is a critical-severity vulnerability in Vikunja with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v4: 6.5
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14907
Weakness: CWE-79
Affected product: Vikunja
Published: 2026-03-24
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-33334?: 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.
How severe is CVE-2026-33334?: CVE-2026-33334 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33334 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33334?: CVE-2026-33334 affects Vikunja. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33334?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-33334 have an EU (EUVD) identifier?: Yes. CVE-2026-33334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14907.
When was CVE-2026-33334 published?: CVE-2026-33334 was published on 2026-03-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*

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