All intelligence
// vulnerability record
cached · NVD via COSMOS syncCVE-2026-57520
HIGHpublished 2026-06-25 20:17 UTC · 3 days ago · modified 2026-06-27 20:41 UTC
7.1
CVSS / 10
// description
Bitwarden Server before 2026.5.0 contains a privilege escalation vulnerability that allows authenticated Custom users with ManageUsers permission to remove Admin accounts from an organization by exploiting a missing role hierarchy check in the bulk user-remove endpoint. Attackers can supply Admin organization-user IDs in a bulk DELETE request to bypass the guard enforced on the single-user removal path, effectively removing one or more Admin accounts from an organization.
// cvss 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
// weaknesses (CWE)
- CWE-862
// references (5)
- https://github.com/bitwarden/server/commit/901bb67157c0f80d369c40b76742fdf7623da4e4
- https://github.com/bitwarden/server/pull/7526
- https://github.com/bitwarden/server/releases/tag/v2026.5.0
- https://sanjokkarki.com.np/blog/bitwarden-bulk-remove-admin
- https://www.vulncheck.com/advisories/bitwarden-server-privilege-escalation-via-bulk-user-remove-endpoint