CVE-2026-93861
In OpenStack Mistral through 23.0.0, the workflow membership API lets a project that has accepted a share of another project's private workflow create a further membership naming a third project. The new membership row is created with its project_id defaulted to the accepting project rather than the original workflow owner, and thus the owner can neither see nor delete it. The third project can accept this membership (that it had not actually been granted by the owner), and then read and execute the owner's private workflow; only the accepting (not the owning) project can later revoke that access.
CVE-2026-93861
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: cve:CVE-2026-93861
Mistral
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://opendev.org/openstack/mistral",
"vendor": "OpenStack",
"product": "Mistral",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "20.1.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "21.0.0",
"lessThan": "21.0.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "22.0.0",
"lessThan": "22.0.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "23.0.0",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-93861
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #30016 · Revision 1
- Added to Heist Feed
- Publisher date