๐Ÿ›ก๏ธ CVE-2026-33758
๐Ÿ”ด CVSS 9.5 โ€” Critical โœ… No Known Exploit CWE-20 NVD
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao installations that have an OIDC/JWT authentication method enabled and a role with `callback_mode=direct` configured are vulnerable to XSS via the `error_description` parameter on the page for a failed authentication. This allows an attacker access to the token used in the Web UI by a victim. The `error_description` parameter has been replaced with a static error message in v2.5.2. The vulnerability can be mitigated by removing any roles with `callback_mode` set to `direct`.

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE CWE-20
Public Exploit โœ… No
Source NVD
Published 2026-03-26
Updated 2026-06-15
Modified 2026-03-27

Affected Packages

Software From version Fixed in
github.com/openbao/openbao โ€” โ€”
openbao โ€” 2.5.2

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