OpenBao Identity-Based Secrets Management System Vulnerability
CVE-2026-55776

6.5MEDIUM

Key Information:

Vendor

Openbao

Status
Openbao
Vendor
CVE Published:
15 September 2026

What is CVE-2026-55776?

OpenBao, an open source identity-based secrets management system, contains a vulnerability where an authenticated user with write access can cause a denial of service. This occurs when the user sets the 'derived' parameter to true while selecting rsa-, ecdsa-, or ed25519 types, leading to a double-unlock of a mutex in the Transit policy creation path. This error causes the server process to panic, resulting in no HTTP response and ultimately terminating the server. The issue was resolved in version 2.5.5.

Affected Version(s)

openbao < 2.5.5

References

https://github.com/openbao/openbao/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/openbao/openbao/pull/3309
x_refsource_MISC
https://github.com/openbao/openbao/pull/3312
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.