Auth bypass in Go-Vikunja Vikunja
CVE-2026-35596
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the hasAccessToLabel function contains a SQL operator precedence bug that allows any authenticated user to read any label that has at least one task association, regardless of project access. Label titles, descriptions, colors, and creator information are exposed. This vulnerability is fixed in 2.3.0.
Vulnerability class: Broken Access Control
EPSS: 0.003 (19.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Go-vikunja Vikunja — versions < 2.3.0
- Vikunja
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-35596?
- CVE-2026-35596 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-04-10.
- How severe is CVE-2026-35596?
- Medium severity. CVSS v3 base score is 4.3 out of 10.