CVE-2026-43640 PUBLISHED

Bitwarden Server < 2026.4.1 Authentication Bypass via SCIM API Key

Assigner: VulnCheck
Reserved: 01.05.2026 Published: 11.05.2026 Updated: 11.05.2026

Bitwarden Server prior to v2026.4.1 does not require master-password re-authentication when retrieving or rotating an organization's SCIM API key, allowing an authenticated user with SCIM management privileges to obtain the key using only a valid session.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.6

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 8.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	bitwarden
Product	server
Versions	Default: affected affected from 0 to 2026.4.1 (excl.)

CVE-2026-43640 PUBLISHED

Bitwarden Server < 2026.4.1 Authentication Bypass via SCIM API Key

Metrics

Product Status

Credits

References

Problem Types