PT-2026-33885 · Openbao+1 · Openbao+1

CVE-2026-40264 · Published 2026-04-20 · Updated 2026-07-30

Positive Technologies (AI Summary)

CVSS v2.0

4.0

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions OpenBao versions prior to 2.5.3

Description OpenBao is an open source identity-based secrets management system that utilizes namespaces for multi-tenant separation. A flaw exists where a tenant that leaks token accessors may have their token revoked or renewed by a privileged administrator from a different tenant.

Recommendations Update to version 2.5.3.

Exploit

Fix

DoS

Weakness Enumeration

CWE-1259

Related Identifiers

BDU:2026-08723

BIT-OPENBAO-2026-40264

CVE-2026-40264

GHSA-P49J-V9WC-WG57

GO-2026-5526

OPENSUSE-SU-2026:10594-1

OPENSUSE-SU-2026:21483-1

Affected Products

Openbao

Red Os

References · 1755

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40264.json · Exploit
• https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10594-1 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-p49j-v9wc-wg57 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-08723 · Security Note
• https://osv.dev/vulnerability/GO-2026-5526 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-40264 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-openbao-2026-40264 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40264 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:21483-1 · Vendor Advisory
• https://github.com/openbao/openbao/releases/tag/v2.5.3 · Note
• https://github.com/openbao/openbao · Note
• https://github.com/openbao/openbao/commit/059cc5950303688335d5c8ab9af8e453795d693a · Note
• https://github.com/openbao/openbao/pull/2934 · Note
• https://suse.com/security/cve/CVE-2025-65797 · Note