What is CVE-2026-123530?

CVE-2026-123530 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Missing Authentication for Critical Function. CVSS score: 5.9/10. Published 2026-11-08.

How severe is CVE-2026-123530?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Auth bypass in Go-Vikunja Vikunja

CVE-2026-123530

Vikunja before 2.7.1 contains a missing authentication vulnerability that allows attackers holding a stolen session to enroll and enable TOTP without the account password. Attackers can call the TOTP enroll and enable endpoints with their own secret to lock the owner out, persisting even after password reset.

Vulnerability class: Broken Authentication

Published 2026-11-08 · last modified 2026-11-08.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Go-Vikunja Vikunja

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

GitHub Security Advisory (GHSA-h4q3-mc9r-q7vv) (vendor-advisory)
VulnCheck Advisory: Vikunja before 2.7.1 Missing Step-Up Authentication via TOTP Enrollment Endpoints (third-party-advisory)

Frequently asked questions

What is CVE-2026-123530?: CVE-2026-123530 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Missing Authentication for Critical Function. CVSS score: 5.9/10. Published 2026-11-08.
How severe is CVE-2026-123530?: Medium severity. CVSS v3 base score is 5.9 out of 10.