Vulnerability · Published May 5, 2026 · Assigned by GitHub_M

CVE-2026-33420Vaultwarden missing authorization check allows Manager-role users to enumerate all collections

Medium 5.3

In plain English

A medium-severity missing authorization in vaultwarden from dani-garcia. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.2%top 93.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
dani-garcia	vaultwarden	< 1.35.5

Weakness: CWE-862 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-jjxg-p3v6-52ww x_refsource_CONFIRM
https://github.com/dani-garcia/vaultwarden/releases/tag/1.35.5 x_refsource_MISC