OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types
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.
BIT-openbao-2026-55776
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-openbao-2026-55776
openbao
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.5.5
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.5"
}
]
}
],
"package": {
"name": "openbao",
"purl": "pkg:bitnami/openbao",
"ecosystem": "Bitnami"
},
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/openbao/BIT-openbao-2026-55776.json"
}
}
]- Related CVEs
- CVE-2026-55776
Source reference:
/aliases
Publisher severity
medium
Source reference: /database_specific/severity
- Event
- #15272 · Revision 1
- Added to Heist Feed
- Publisher date