CVE catalog
CVE-2026-57520
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 explo
- Severity
- High · CVSS 7.1
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 - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.64% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | server | Not reported | 2026.5.0 | fixed |
| Cpe | server | Not reported | 2026.5.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | server | cpe | Not reported | 2026.5.0 | Not reported | Not reported | Not reported |
| Cpe | server | cpe | Not reported | 2026.5.0 | Not reported | NVD-CVE-2026-57520 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [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://nvd.nist.gov/vuln/detail/CVE-2026-57520]
- [https://sanjokkarki.com.np/blog/bitwarden-bulk-remove-admin]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2095.json]
- [https://www.vulncheck.com/advisories/bitwarden-server-privilege-escalation-via-bulk-user-remove-endpoint]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)]