CVE-2026-123520

HIGH 7.1

Vikunja 0.18.0 before 2.7.1 Privilege Escalation via Account Deletion

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

Vikunja from 0.18.0 before 2.7.1 contains a privilege escalation vulnerability that allows team owners to gain admin or ownership of read-only shared projects by deleting accounts. Attackers can create a bot, add it to their team, and delete it through the bots endpoint, triggering ensureProjectAdminUser to promote read-only shares and lock out the real owner.

CWE	CWE-269
Vendor	go-vikunja
Product	vikunja
Published	Nov 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

Low

Affected Versions

go-vikunja / vikunja

0.18.0 < 2.7.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-hq66-9qg8-jwqg vulncheck.com: https://www.vulncheck.com/advisories/vikunja-0.18.0-before-2.7.1-privilege-escalation-via-account-deletion

Credits

🔍 lissy93 🔍 dagadjno