CVE-2026-34727

Published: Apr 10, 2026Modified: Jun 17, 2026

9.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitability: 3.9 / Impact: 5.2

Source: NVD

Description

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the OIDC callback handler issues a full JWT token without checking whether the matched user has TOTP two-factor authentication enabled. When a local user with TOTP enrolled is matched via the OIDC email fallback mechanism, the second factor is completely skipped. This vulnerability is fixed in 2.3.0.

Affected (1)

Products: Vikunja: Vikunja

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Vikunja Vikunja	Before 2.3.0

Related CWEs

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (2)

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cg

Source: security-advisories@github.com

ExploitVendor Advisory

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cg

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.