CVE-2026-55776

OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types

Published: Sep 15, 2026Updated: Sep 17, 2026 Sources: CVE List NVDCWE-617

6.5MEDIUM

Description

OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, an authenticated OpenBao caller with write access to transit/keys/* could terminate the server process by setting derived to true while the type parameter selected rsa-, ecdsa-, or ed25519. The Transit policy creation path in builtin/logical/transit/backend.go and sdk/helper/keysutil/policy.go could reach an error path that double-unlocked a mutex while handling this invalid asymmetric derived-key combination, causing a panic, no HTTP response, process exit, and denial of service. JSON and HCL key-creation requests can express the triggering combination. This issue is fixed in version 2.5.5.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-617

Affected Products

openbao

oss-project

openbaoOn-prem

Security Products / identity-access-mgmt

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

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MITRE ATT&CK

1 technique

Impact

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References

https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j

github.com

https://github.com/openbao/openbao/pull/3309

github.com

https://github.com/openbao/openbao/pull/3312

github.com

and 4 more references View all →

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