CVE-2026-126311

OpenBao before 2.6.5 and 2.7.2 Wildcard Principals in SSH Certificates via Identity Templates

Published Nov 13, 2026 CVSS 4.0 · 4.6 Medium EPSS n/a KEV · Not listed

Description

OpenBao before 2.6.5 and 2.7.x before 2.7.2 does not neutralize wildcard characters in SSH certificate principals rendered from unvalidated external token metadata via identity templates in the SSH secrets engine. Attackers controlling that metadata, typically through a compromised identity provider, can inject '*' to obtain SSH certificates valid for multiple hosts or users.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

openbao

unaffected

Version	Status	Constraints
`0`	affected	< 2.6.5
`2.6.5`	unaffected	—
`2.7.0`	affected	< 2.7.2
`2.7.2`	unaffected	—

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity High

Privileges Required High

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required High

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/openbao/openbao/security/advisories/GHSA-h76r-48x5-36hg
https://www.vulncheck.com/advisories/openbao-before-2.6.5-and-2.7.2-wildcard-principals-in-ssh-certificates-via-identity-templates

History

Nov 13, 2026 9:45 AM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		OpenBao before 2.6.5 and 2.7.x before 2.7.2 does not neutralize wildcard characters in SSH certificate principals rendered from unvalidated external token metadata via identity templates in the SSH secrets engine. Attackers controlling that metadata, typically through a compromised identity provider, can inject '*' to obtain SSH certificates valid for multiple hosts or users.
Title		OpenBao before 2.6.5 and 2.7.2 Wildcard Principals in SSH Certificates via Identity Templates
First Time appeared		Openbao Openbao openbao
Weaknesses		CWE-155
CPEs		cpe:2.3:a:openbao:openbao::::::::
Vendors & Products		Openbao Openbao openbao
References		https://github.com/openbao/openbao/security/advisories/GHSA-h76r-48x5-36hg https://www.vulncheck.com/advisories/openbao-before-2.6.5-and-2.7.2-wildcard-principals-in-ssh-certificates-via-identity-templates
Metrics		cvssV3_1 `{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N'}` cvssV4_0 `{'score': 4.6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N'}`