Information disclosure in Go-Vikunja Vikunja
CVE-2026-33677
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the `GET /api/v1/projects/:project/webhooks` endpoint returns webhook BasicAuth credentials (`basic_auth_user` and `basic_auth_password`) in plaintext to any user with read access to the project. While the existing code correctly masks the HMAC `secret` field, the BasicAuth fields added in a later migration were not given the same treatment. This allows read-only collaborators to steal credentials intended for authenticating against external webhook receivers. Version 2.2.1 patches the issue.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Go-Vikunja Vikunja — versions < 2.2.1
- Vikunja
Weakness classification (CWE)
References
- github.com/go-vikunja/vikunja/security/advisories/GHSA-7c2g-p23p-4jg3 (Exploit, Vendor Advisory)
- vikunja.io/changelog/vikunja-v2.2.2-was-released (Release Notes)
Frequently asked questions
- What is CVE-2026-33677?
- CVE-2026-33677 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-03-24.
- How severe is CVE-2026-33677?
- Medium severity. CVSS v3 base score is 6.5 out of 10.