Vulnerability in Openbao
CVE-2026-115363
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.
Published .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/openbao/openbao/security/advisories/GHSA-3237-j65r-m5rp (vendor-advisory)
- www.vulncheck.com/advisories/openbao-2.2.0-before-2.6.4-and-2.7.0-before-2.7.1-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-115363?
- CVE-2026-115363 is a low-severity vulnerability in Openbao, classified under Improper Removal of Sensitive Information Before Storage or Transfer. CVSS score: 3.3/10. Published 2026-10-22.
- How severe is CVE-2026-115363?
- Low severity. CVSS v3 base score is 3.3 out of 10.