Medium 6.1Published Mar 27, 2026

CVE-2026-33758OpenBao is an open source identity-based secrets management system.

Updated under an hour ago (2026-10-19 08:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for openbao

Exploited in the last 30 days

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`.

CVSS: 6.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-20, CWE-79, CWE-116
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

Affected products

openbao openbao openbao:openbao	before 2.5.2	NVD

References

https://github.com/openbao/openbao/commit/6e2b2dd84f0e47cebc90d6e79609dd5274732662patch
https://github.com/openbao/openbao/pull/2709issue-tracking, patch
https://github.com/openbao/openbao/releases/tag/v2.5.2product, release-notes
https://github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-33758
https://bugzilla.redhat.com/show_bug.cgi?id=2452294
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33758.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.