Medium severity · published May 5, 2026
CVE-2026-33420
Vaultwarden missing authorization check allows Manager-role users to enumerate all collections
5.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VA
vaultwarden · dani-garcia
< 1.35.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33420
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33420
Product
https://github.com/dani-garcia/vaultwarden/releases/tag/1.35.5
Mitigation
https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-jjxg-p3v6-52ww
More from vaultwarden
9.8
CVE-2026-43914
Vaultwarden: Brute-force protection bypass vulnerability
9.8
CVE-2024-55225
An issue in the component src/api/identity.rs of Vaultwarden prior to v1.32.5 allows attackers to impersonate users, including Administrators, via a crafted authorization request
9.6
CVE-2024-55224
An HTML injection vulnerability in Vaultwarden prior to v1.32.5 allows attackers to execute arbitrary code via injecting a crafted payload into the username field of an e-mail…
8.8
CVE-2024-39924
An issue was discovered in Vaultwarden (formerly Bitwarden_RS) 1.30.3
8.7
CVE-2026-43912
Vaultwarden: Cross-Org Group Binding Enables Unauthorized Read And Write Access Into Another Organization