DEBIAN-CVE-2026-93854
In OpenStack Blazar before 17.0.1, the V2 lease API does not enforce object-level authorization on its update and delete operations (PUT /v2/leases/{lease_id} and DELETE /v2/leases/{lease_id}). The policy authorize() wrapper attempts to load the target lease to build the authorization target from its owner, but it looks up the lease under the keyword "lease_id" whereas the controller methods name the parameter "id" (and the wsme_pecan.wsexpose wrapper delivers it positionally). The lookup returns None, and thus authorization falls back to the requesting user's own project_id/user_id instead of the target lease owner. Any authenticated user who knows a lease ID can therefore modify or delete leases belonging to other users and projects, bypassing the intended ownership check.
DEBIAN-CVE-2026-93854
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:DEBIAN-CVE-2026-93854
blazar
Source reference: /affected/0/package/name
- Affected versions
- 15.0.0-3
Source reference:
/affected/0/versions16.0.0-1Source reference:
/affected/0/versions16.0.0~rc1-1Source reference:
/affected/0/versions16.0.0~rc1-2Source reference:
/affected/0/versions16.0.0~rc1-3Source reference:
/affected/0/versions17.0.0-1Source reference:
/affected/0/versions17.0.0-2Source reference:
/affected/0/versions17.0.0~rc1-1Source reference:
/affected/0/versions17.0.0~rc1-3Source reference:
/affected/0/versions18.0.0~rc1-1Source reference:
/affected/0/versions18.0.0~rc1-2Source reference:
/affected/0/versions18.0.0~rc1-3Source reference:
/affected/0/versions18.0.0~rc2-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
blazar
Source reference: /affected/1/package/name
- Affected versions
- 15.0.0-3
Source reference:
/affected/1/versions16.0.0-1Source reference:
/affected/1/versions16.0.0~rc1-1Source reference:
/affected/1/versions16.0.0~rc1-2Source reference:
/affected/1/versions16.0.0~rc1-3Source reference:
/affected/1/versions17.0.0-1Source reference:
/affected/1/versions17.0.0-2Source reference:
/affected/1/versions17.0.0~rc1-1Source reference:
/affected/1/versions17.0.0~rc1-3Source reference:
/affected/1/versions18.0.0~rc1-1Source reference:
/affected/1/versions18.0.0~rc1-2Source reference:
/affected/1/versions - Fixed versions
- 18.0.0~rc1-3
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": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "blazar",
"purl": "pkg:deb/debian/blazar?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"15.0.0-3",
"16.0.0-1",
"16.0.0~rc1-1",
"16.0.0~rc1-2",
"16.0.0~rc1-3",
"17.0.0-1",
"17.0.0-2",
"17.0.0~rc1-1",
"17.0.0~rc1-3",
"18.0.0~rc1-1",
"18.0.0~rc1-2",
"18.0.0~rc1-3",
"18.0.0~rc2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93854.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "18.0.0~rc1-3"
}
]
}
],
"package": {
"name": "blazar",
"purl": "pkg:deb/debian/blazar?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"15.0.0-3",
"16.0.0-1",
"16.0.0~rc1-1",
"16.0.0~rc1-2",
"16.0.0~rc1-3",
"17.0.0-1",
"17.0.0-2",
"17.0.0~rc1-1",
"17.0.0~rc1-3",
"18.0.0~rc1-1",
"18.0.0~rc1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93854.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #25954 · Revision 1
- Added to Heist Feed
- Publisher date