CVE-2026-101878 Bitwarden Server 2025.6.0 < 2025.6.0 Authentication Bypass via SSO Identifier Truncation

Bitwarden Server 2025.6.0 before 2026.5.0 declares the @ExternalId parameter of the UserReadBySsoUserOrganizationIdExternalId stored procedure as NVARCHAR50 while the column it queries stores NVARCHAR300, silently truncating the SSO login identifier on SQL Server deployments and allowing a user...

CVE-2026-101878 Bitwarden Server 2025.6.0 < 2025.6.0 Authentication Bypass via SSO Identifier Truncation

Bitwarden Server 2025.6.0 before 2026.5.0 declares the @ExternalId parameter of the UserReadBySsoUserOrganizationIdExternalId stored procedure as NVARCHAR50 while the column it queries stores NVARCHAR300, silently truncating the SSO login identifier on SQL Server deployments and allowing a user...

CVE-2026-101878 Bitwarden Server 2025.6.0 < 2025.6.0 Authentication Bypass via SSO Identifier Truncation

Bitwarden Server 2025.6.0 before 2026.5.0 declares the @ExternalId parameter of the UserReadBySsoUserOrganizationIdExternalId stored procedure as NVARCHAR50 while the column it queries stores NVARCHAR300, silently truncating the SSO login identifier on SQL Server deployments and allowing a user...

CVE-2026-101878

Bitwarden Server versions 2025.6.0 before 2026.5.0 are vulnerable to an authentication bypass on SQL Server deployments. The root cause is an identifier truncation issue where the @ExternalId parameter of the User_ReadBySsoUserOrganizationIdExternalId stored procedure is declared as NVARCHAR(50),...