DEBIAN-CVE-2026-93861

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Source
https://security-tracker.debian.org/tracker/CVE-2026-93861
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93861.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-93861
Upstream
Published
2026-10-08T18:18:31Z
Modified
2026-10-09T08:00:08Z
Severity
  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / mistral

Package

Name
mistral
Purl
pkg:deb/debian/mistral?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

15.*
15.0.0-1
15.0.0-1+deb12u1
16.*
16.0.0~rc1-1
16.0.0-1
16.0.0-2
16.0.0-3
16.0.0-4
17.*
17.0.0~rc1-1
17.0.0-1
17.0.0-2
17.0.0-3
18.*
18.0.0~rc1-1
18.0.1-1
19.*
19.0.0~rc1-1
19.0.0~rc1-2
19.0.0-1
19.0.0-2
20.*
20.0.0~rc1-1
20.0.0~rc1-2
20.0.0-1
20.0.0-2
21.*
21.0.0~rc1-1
21.0.0~rc1-2
21.0.0-1
21.0.0-2
21.0.0-4
21.0.0-5
21.0.0-6
22.*
22.0.0~rc1-1
22.0.0~rc1-2
22.0.0~rc1-3
22.0.0-1
22.0.0-3
23.*
23.0.0~rc1-1
23.0.0~rc1-2
23.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93861.json"

Debian:13 / mistral

Package

Name
mistral
Purl
pkg:deb/debian/mistral?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.0.0-2
20.0.0-2+deb13u1
21.*
21.0.0~rc1-1
21.0.0~rc1-2
21.0.0-1
21.0.0-2
21.0.0-4
21.0.0-5
21.0.0-6
22.*
22.0.0~rc1-1
22.0.0~rc1-2
22.0.0~rc1-3
22.0.0-1
22.0.0-3
23.*
23.0.0~rc1-1
23.0.0~rc1-2
23.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93861.json"

Debian:14 / mistral

Package

Name
mistral
Purl
pkg:deb/debian/mistral?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.0.0-2
21.*
21.0.0~rc1-1
21.0.0~rc1-2
21.0.0-1
21.0.0-2
21.0.0-4
21.0.0-5
21.0.0-6
22.*
22.0.0~rc1-1
22.0.0~rc1-2
22.0.0~rc1-3
22.0.0-1
22.0.0-3
23.*
23.0.0~rc1-1
23.0.0~rc1-2
23.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93861.json"