GHSA-p49j-v9wc-wg57Published

OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation

Exploitation and risk

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cve-program · CVE-2026-40264

Published

OpenBao is an open source identity-based secrets management system. OpenBao's namespaces provide multi-tenant separation. Prior to version 2.5.3, a tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. This is addressed in v2.5.3.

Source published: 21 Apr 2026 00:47:38 UTC
Source modified: 21 Apr 2026 19:30:51 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · 2.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

euvd · EUVD-2026-24037

Published

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Apr 21, 2026, 12:47:38 AM

dateUpdated: Apr 21, 2026, 7:30:51 PM

2 related source bulletins · separate from aliases

openSUSE-SU-2026:10594-1: openbao-2.5.3-1.1 on GA media

CVE-2026-3605 · CVE-2026-39388 · CVE-2026-39396 · CVE-2026-39946 · CVE-2026-40264 · CVE-2026-5807

WID-SEC-W-2026-1189: OpenBao: Mehrere Schwachstellen

CVE-2026-39388 · CVE-2026-39396 · CVE-2026-39946 · CVE-2026-40264

Source published: Apr 21, 2026, 12:47:38 AM (timezone not stated)
Source modified: Apr 21, 2026, 7:30:51 PM (timezone not stated)
Saved here: 15 Nov 2026 11:07:41 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 4.0 · 2.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

nvd · CVE-2026-40264

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-1259

Original publisher date fields

published: 2026-04-21T01:16:06.917

lastModified: 2026-11-11T23:10:00.263

1 source CPE criteria · context only

cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 21 Apr 2026 01:16:06 UTC
Source modified: 11 Nov 2026 23:10:00 UTC
Saved here: 12 Nov 2026 15:18:49 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 2.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Primary · 2.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

osv · GHSA-p49j-v9wc-wg57

Published

### Impact OpenBao's namespaces provide multi-tenant separation. A tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. ### Patches This was addressed in v2.5.3.

Source published: 21 Apr 2026 18:27:42 UTC
Source modified: 10 Sep 2026 03:51:02 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Publisher rating · LOW

osv · GO-2026-5526

Published

OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation in github.com/openbao/openbao

Source published: 25 Jun 2026 22:34:34 UTC
Source modified: 27 Jul 2026 09:11:20 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.