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CVE-2026-115363GHSA-3237-j65r-m5rp

OpenBao 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 ACME EAB MAC Key Disclosure via Sanitized Configuration

openbao openbao
Open in ThreatlineRecord JSON
CVSS
2.1Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.13%Chance of exploitation activity in the next 30 days, higher than 2% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.6.4Also 2.7.1CVE List
Published22 Oct 2026Updated 22 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 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 contains an information disclosure vulnerability that exposes the tls_acme_eab_mac_key value through the sys/config/state/sanitized endpoint. Callers of the sanitized configuration endpoint can retrieve the ACME External Account Binding MAC key used for TLS listener certificates, letting them bind to the operator's ACME account.

Text from CVE List

Affected versions 4

  • openbaoaffected: 2.2.0 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