CVE-2026-33420 Vaultwarden missing authorization check allows Manager-role users to enumerate all collections
Manager-role users can enumerate all organization collections due to a missing authorization check in the Vaultwarden server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33420?
CVE-2026-33420 is a medium-severity missing authorization vulnerability in dani-garcia vaultwarden, published on 5 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-33420?
It affects 1 product.
Products include Dani-Garcia Vaultwarden.
How do I fix CVE-2026-33420?
No fix has been published for CVE-2026-33420 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-33420 being exploited?
There is no known exploitation of CVE-2026-33420 in the wild and no public exploit code.
Other vulnerabilities in dani-garcia vaultwarden
- CVE-2024-55225 Vaultwarden vulnerable to user impersonation
- CVE-2024-55224 Vaultwarden HTML injection vulnerability
- CVE-2024-39924 Privilege escalation in n/a
- CVE-2026-43912 Vaultwarden: Cross-Org Group Binding Enables Unauthorized Read And Write Access Into Another Organization
- CVE-2026-27802 Vaultwarden: Privilege Escalation via Bulk Permission Update to Unauthorized Collections by Manager
Sources
Also known as GHSA-jjxg-p3v6-52ww.