What is CVE-2026-33700?

CVE-2026-33700 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.9/10. Published 2026-03-24.

How severe is CVE-2026-33700?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Auth bypass in Go-Vikunja Vikunja

CVE-2026-33700

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the `DELETE /api/v1/projects/:project/shares/:share` endpoint does not verify that the link share belongs to the project specified in the URL. An attacker with admin access to any project can delete link shares from other projects by providing their own project ID combined with the target share ID. Version 2.2.1 patches the issue.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.002 (10.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

Affected products

Go-vikunja Vikunja — versions < 2.2.1
Vikunja

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-33700?: CVE-2026-33700 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.9/10. Published 2026-03-24.
How severe is CVE-2026-33700?: Medium severity. CVSS v3 base score is 4.9 out of 10.