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Vulnerability Details :

CVE-2026-40264

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-21 Apr, 2026 | 00:47
Updated At-21 Apr, 2026 | 19:30
Rejected At-
Credits

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

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:21 Apr, 2026 | 00:47
Updated At:21 Apr, 2026 | 19:30
Rejected At:
▼CVE Numbering Authority (CNA)
OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation

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.

Affected Products
Vendor
openbao
Product
openbao
Versions
Affected
  • < 2.5.3
Problem Types
TypeCWE IDDescription
CWECWE-1259CWE-1259: Improper Restriction of Security Token Assignment
Type: CWE
CWE ID: CWE-1259
Description: CWE-1259: Improper Restriction of Security Token Assignment
Metrics
VersionBase scoreBase severityVector
4.02.0LOW
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
Version: 4.0
Base score: 2.0
Base severity: LOW
Vector:
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57
x_refsource_CONFIRM
Hyperlink: https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:21 Apr, 2026 | 01:16
Updated At:24 Apr, 2026 | 13:29

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.02.0LOW
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
Primary3.12.7LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Type: Secondary
Version: 4.0
Base score: 2.0
Base severity: LOW
Vector:
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
Type: Primary
Version: 3.1
Base score: 2.7
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
CPE Matches
openbao
openbao
>>openbao>>Versions before 2.5.3(exclusive)
cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-1259Primarysecurity-advisories@github.com
CWE ID: CWE-1259
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57security-advisories@github.com
Vendor Advisory
Hyperlink: https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57
Source: security-advisories@github.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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