CVE-2026-33757— OpenBao lacks user confirmation for OIDC direct callback mode

OpenBao lacks user confirmation for OIDC direct callback mode

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao does not prompt for user confirmation when logging in via JWT/OIDC and a role with `callback_mode` set to `direct`. This allows an attacker to start an authentication request and perform "remote phishing" by having the victim visit the URL and automatically log-in to the session of the attacker. Despite being based on the authorization code flow, the `direct` mode calls back directly to the API and allows an attacker to poll for an OpenBao token until it is issued. Version 2.5.2 includes an additional confirmation screen for `direct` type logins that requires manual user interaction in order to finish the authentication. This issue can be worked around either by removing any roles with `callback_mode=direct` or enforcing confirmation for every session on the token issuer side for the Client ID used by OpenBao.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

会话固定

OpenBao 授权问题漏洞

OpenBao是OpenBao开源的一个敏感数据管理软件。 OpenBao 2.5.2之前版本存在授权问题漏洞，该漏洞源于通过JWT/OIDC登录且角色callback_mode设置为direct时未提示用户确认，可能导致远程钓鱼攻击。

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