CVE-2026-33757OpenBao is an open source identity-based secrets management system.
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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
- 8.3 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
- Weakness (CWE)
- CWE-384
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
openbao openbao openbao:openbao | before 2.5.2 | NVD |
References
- https://datatracker.ietf.org/doc/html/rfc8628#section-5.4technical-description
- https://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964patch
- https://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-33757
- https://bugzilla.redhat.com/show_bug.cgi?id=2452269
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33757.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.