Auth bypass in Dani-Garcia Vaultwarden
CVE-2026-33420
Vaultwarden is a Bitwarden-compatible server written in Rust. In version 1.35.4 and earlier, the get_org_collections_details endpoint (GET /api/organizations/{org_id}/collections/details) is missing the has_full_access() authorization check that exists on the sibling get_org_collections endpoint. This allows any Manager-role user with accessAll=False and no collection assignments to retrieve the names, UUIDs, user-to-collection mappings, and group-to-collection mappings for all collections in the organization. This issue has been fixed in version 1.35.5.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Dani-Garcia Vaultwarden — versions < 1.35.5
Weakness classification (CWE)
References
- github.com/dani-garcia/vaultwarden/security/advisories/GHSA-jjxg-p3v6-52ww (Mitigation, Vendor Advisory)
- github.com/dani-garcia/vaultwarden/releases/tag/1.35.5 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-33420?
- CVE-2026-33420 is a medium-severity vulnerability in Dani-Garcia Vaultwarden, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-05-05.
- How severe is CVE-2026-33420?
- Medium severity. CVSS v3 base score is 5.3 out of 10.