Bug 2452269 (CVE-2026-33757) - CVE-2026-33757 OpenBao: lack of user confirmation for OpenBao OIDC direct callback mode
Summary: CVE-2026-33757 OpenBao: lack of user confirmation for OpenBao OIDC direct cal...
Keywords:
Status: NEW
Alias: CVE-2026-33757
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2452353 2452351 2452352
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-27 15:02 UTC by OSIDB Bzimport
Modified: 2026-03-27 17:47 UTC (History)
6 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-03-27 15:02:16 UTC
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.


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