CVE-2026-115356

Medium

Description

OpenBao before 2.6.4 and 2.7.x before 2.7.1 does not verify, when renewing a token issued by the Kubernetes Auth method, that the service account token originally used to authenticate is still valid. An authenticated attacker can keep renewing such tokens to persist access after the Kubernetes service account has been deleted.

SeverityMedium

CVSS5.4

Exploit probability—

ProductOpenbao

PublishedOct 22, 2026

First seenOct 22, 2026

Weakness typeCWE-613CWE-613

How to fix

Update

openbao openbao2.6.4, 2.7.1 or later

Vendor advisories

github.com/openbao/openbao/security/advisories/GHSA-gf3j-hm38-jhh5

Affected products

Product	Affected versions	Fixed in
openbao openbao	v < 2.6.4, 2.7.0 ≤ v < 2.7.1	2.6.4, 2.7.1

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