How severe is CVE-2026-33668?

CVE-2026-33668 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-33668 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33668?

CVE-2026-33668 affects Vikunja. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33668?

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

Does CVE-2026-33668 have an EU (EUVD) identifier?

Yes. CVE-2026-33668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14913.

When was CVE-2026-33668 published?

CVE-2026-33668 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33668

CVE-2026-33668 is a high-severity vulnerability in Vikunja with a CVSS 3.x base score of 8.1. 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-285.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v4: 7.1
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14913
Weakness: CWE-285
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 0.18.0 and prior to version 2.2.1, when a user account is disabled or locked, the status check is only enforced on the local login and JWT token refresh paths. Three other authentication paths — API tokens, CalDAV basic auth, and OpenID Connect — do not verify user status, allowing disabled or locked users to continue accessing the API and syncing data. Version 2.2.1 patches the issue.

Frequently asked questions

What is CVE-2026-33668?: Vikunja is an open-source self-hosted task management platform. Starting in version 0.18.0 and prior to version 2.2.1, when a user account is disabled or locked, the status check is only enforced on the local login and JWT token refresh paths. Three other authentication paths — API tokens, CalDAV basic auth, and OpenID Connect — do not verify user status, allowing disabled or locked users to continue accessing the API and syncing data. Version 2.2.1 patches the issue.
How severe is CVE-2026-33668?: CVE-2026-33668 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-33668 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33668?: CVE-2026-33668 affects Vikunja. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33668?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33668 have an EU (EUVD) identifier?: Yes. CVE-2026-33668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14913.
When was CVE-2026-33668 published?: CVE-2026-33668 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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