All vulnerabilities
CVE-2026-115356GHSA-gf3j-hm38-jhh5

OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Kubernetes Auth Method Token Renewal After Revocation

openbao openbao
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.6.4Also 2.7.1CVE List
Published22 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 4

  • openbaoaffected: all versions before 2.6.4CVE List
  • openbaounaffected: 2.6.4CVE List
  • openbaoaffected: 2.7.0 before 2.7.1CVE List
  • openbaounaffected: 2.7.1CVE List

References 2