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`.

INFO

Published Date :

2026-03-27T14:12:33.941Z

Last Modified :

2026-03-27T19:58:18.047Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33758 vulnerability.

Vendors Products
Openbao
  • Openbao
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33758.

URL Resource
https://github.com/openbao/openbao/commit/6e2b2dd84f0e47cebc90d6e79609dd5274732662 cve-icon cve-icon cve-icon
https://github.com/openbao/openbao/pull/2709 cve-icon cve-icon cve-icon
https://github.com/openbao/openbao/releases/tag/v2.5.2 cve-icon cve-icon cve-icon
https://github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33758 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33758 cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
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