Openbao · Openbao · CVE-2026-33757
**Name of the Vulnerable Software and Affected Versions**
OpenBao versions prior to 2.5.2
**Description**
OpenBao, an open source identity-based secrets management system, does not prompt for user confirmation when logging in via JWT/OIDC with a role configured with `callback mode` set to `direct`. This allows an attacker to initiate an authentication request and perform a "remote phishing" attack, automatically logging a victim into the attacker's session upon visiting a crafted URL. The `direct` mode allows an attacker to repeatedly query the API for an OpenBao token until one is issued.
**Recommendations**
Versions prior to 2.5.2: Upgrade to version 2.5.2 or later, which includes an additional confirmation screen for `direct` type logins requiring manual user interaction.
Versions prior to 2.5.2: Remove any roles with `callback mode` set to `direct`.
Versions prior to 2.5.2: Enforce confirmation for every session on the token issuer side for the Client ID used by OpenBao.