Security Advisory

CVE-2026-43639

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-11 17:14:04

Last updated 2026-07-14 20:01:12

Assigner VulnCheck

CVSS score 8.9

State PUBLISHED

Description

Bitwarden Server prior to v2026.4.0 contains a missing authorization vulnerability that allows a provider service user to add an arbitrary organization to their provider via `POST /providers/{providerId}/clients/existing`, resulting in takeover of the target organization; self-hosted installations are unaffected as this endpoint is restricted to Cloud via SelfHosted(NotSelfHostedOnly = true).

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