GitHub Advisoryadvisory · Go

GHSA-c36x-h252-g9x2 OpenBao: Cross-namespace lease revocation/renewal via canonical sys/leases/{revoke,renew} — incomplete fix of CVE-2026-45808

LOW Published 2026-06-19 Modified 2026-06-19 Official page ↗
Aliases
CVE-2026-55774
Ecosystem
Go
Packages
github.com/openbao/openbao
Severity
Low
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weaknesses
CWE-863
Reviewed
2026-06-19

Affected packages

• Go github.com/openbao/openbao: >= 0.1.0, <= 2.5.4 (no fix yet) • Go github.com/openbao/openbao: < 0.0.0-20260617103932-b20b999dd404 → fixed in 0.0.0-20260617103932-b20b999dd404

Description

Summary OpenBao users with access to the `sys/leases/revoke/:lease_id` endpoint in any namespace can revoke leases in any other namespace as long as the lease identifier is known to them, bypassing ACLs that should apply for cross-namespace revocations. Impact OpenBao's namespaces provide multi-tenant separation. A tenant who intentionally leaks lease identifiers can have their lease and underlying credential revoked by a user in another tenant. Patch This will be fixed in OpenBao v2.5.5. References This vulnerability is similar to but distinct from: • CVE-2026-45808 / GHSA-v8v8-cm84-m686 • CVE-2026-40264 / GHSA-p49j-v9wc-wg57

Related

Alias · CVE (1)

  • CVE-2026-55774 OpenBao is an open source identity-based secrets management system. vulnerability

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References