CVE-2026-55774
Severity not reportedOpenBao is an open source identity-based secrets management system.
OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, an OpenBao user with access to sys/leases/revoke/:lease_id in one namespace could revoke a lease in another namespace when the foreign lease_id was known, bypassing namespace ACL isolation. The affected lease lookup routing in vault/expiration.go allowed FetchLeaseInfo and loadEntry to resolve cached or stored lease data outside the request namespace, allowing a tenant that intentionally disclosed a lease identifier to have the lease and its underlying credential revoked by another tenant. This issue is fixed in version 2.5.5.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/openbao/openbao/commit/9ba1413d793223cca67db12434093a2f25fdc540 security-advisories@github.com
- https://github.com/openbao/openbao/commit/b20b999dd4044d7b419a5472d8fe08407828be37 security-advisories@github.com
- https://github.com/openbao/openbao/pull/3307 security-advisories@github.com
- https://github.com/openbao/openbao/pull/3310 security-advisories@github.com
- https://github.com/openbao/openbao/releases/tag/v2.5.5 security-advisories@github.com
- https://github.com/openbao/openbao/releases/tag/v2.6.0 security-advisories@github.com
- https://github.com/openbao/openbao/security/advisories/GHSA-c36x-h252-g9x2 security-advisories@github.com