CVE-2026-126311
OpenBao before 2.6.5 and 2.7.2 Wildcard Principals in SSH Certificates via Identity Templates
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| openbao openbao github.com/openbao/openbao/v2
golang |
≥ 0; < 2.6.5 (affected, semver) 2.6.5 (unaffected, semver) ≥ 2.7.0; < 2.7.2 (affected, semver) 2.7.2 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 4.6 medium |
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 | CNA: VulnCheck |
| 3.1 / 5.8 medium |
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/openbao/openbao/security/advisories/GHSA-h76r-48x5-36hgCNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/openbao-before-2.6.5-and-2.7.2-wildcard-principals-in-ssh-certificates-via-identity-templatesCNA: VulnCheck · third-party-advisory
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