OpenBao: Cross-namespace lease revocation/renewal via canonical sys/leases/{revoke,renew} — incomplete fix of CVE-2026-45808
### 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
GHSA-c36x-h252-g9x2
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:GHSA-c36x-h252-g9x2
github.com/openbao/openbao
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
github.com/openbao/openbao
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 0.0.0-20260617103932-b20b999dd404
Source reference:
/affected/1/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": "0.1.0"
},
{
"last_affected": "2.5.4"
}
]
}
],
"package": {
"name": "github.com/openbao/openbao",
"purl": "pkg:golang/github.com/openbao/openbao",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c36x-h252-g9x2/GHSA-c36x-h252-g9x2.json"
}
},
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.0.0-20260617103932-b20b999dd404"
}
]
}
],
"package": {
"name": "github.com/openbao/openbao",
"purl": "pkg:golang/github.com/openbao/openbao",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c36x-h252-g9x2/GHSA-c36x-h252-g9x2.json"
}
}
]- Related CVEs
- CVE-2026-55774
Source reference:
/aliases
Publisher severity
low
Source reference: /database_specific/severity
- Event
- #15260 · Revision 1
- Added to Heist Feed
- Publisher date