# CVE-2026-57520: Bitwarden Server < 2026.5.0 Privilege Escalation via Bulk User Remove Endpoint

> CVE-2026-57520: Bitwarden Server < 2026.5.0 Privilege Escalation via Bulk User Remove Endpoint. CVSS 7.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-57520
Last updated: 2026-07-14T22:17:23Z

- Published: 2026-06-25 19:08 UTC · Updated: 2026-07-14 22:17 UTC · Assigner: VulnCheck
- CVSS: 7.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
- EPSS: 0.64%, 50th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-862

## 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.

## Affected vendors and products

- bitwarden: server

## Tracked companies

- [Bitwarden](https://rewindex.com/company/bitwarden.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-57520)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-57520)
- [https://github.com/bitwarden/server/commit/901bb67157c0f80d369c40b76742fdf7623da4e4](https://github.com/bitwarden/server/commit/901bb67157c0f80d369c40b76742fdf7623da4e4)
- [https://github.com/bitwarden/server/pull/7526](https://github.com/bitwarden/server/pull/7526)
- [https://github.com/bitwarden/server/releases/tag/v2026.5.0](https://github.com/bitwarden/server/releases/tag/v2026.5.0)
- [https://sanjokkarki.com.np/blog/bitwarden-bulk-remove-admin](https://sanjokkarki.com.np/blog/bitwarden-bulk-remove-admin)
- [https://www.vulncheck.com/advisories/bitwarden-server-privilege-escalation-via-bulk-user-remove-endpoint](https://www.vulncheck.com/advisories/bitwarden-server-privilege-escalation-via-bulk-user-remove-endpoint)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-57520 · Markdown: https://rewindex.com/cve/CVE-2026-57520.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-57520 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:12:55.085Z