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CVE-2026-57520

7.1 high SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.1 · bitwardenNVD modified 2026-10-25 22:10

Affected (CPE criteria) 1

  • cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*

References 5