DEBIAN-CVE-2026-42998

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Source
https://security-tracker.debian.org/tracker/CVE-2026-42998
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42998.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-42998
Upstream
Published
2026-05-28T19:16:37Z
Modified
2026-09-01T16:06:43Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone application credential authentication plugin does not verify that the user supplied in the authentication request matches the owner of the application credential. An attacker can authenticate with their own application credential ID and secret while specifying a different user's name and domain in the request body. Keystone issues a token attributed to the victim user. The impersonated token is project-scoped and carries the intersection of the application credential's roles and the victim's actual roles on the project. This enables audit evasion, reading the victim's credentials, and acting as the victim within shared projects.

References

Affected packages

Debian:12 / keystone

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2:22.0.2-0+deb12u3

Affected versions

2:22.*
2:22.0.0-2
2:22.0.2-0+deb12u1
2:22.0.2-0+deb12u2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42998.json"

Debian:13 / keystone

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2:27.0.0-3+deb13u4

Affected versions

2:27.*
2:27.0.0-3
2:27.0.0-3+deb13u1
2:27.0.0-3+deb13u3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42998.json"

Debian:14 / keystone

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2:29.0.1-2

Affected versions

2:27.*
2:27.0.0-3
2:28.*
2:28.0.0~rc1-1
2:28.0.0~rc1-2
2:28.0.0~rc1-4
2:28.0.0-1
2:28.0.0-2
2:28.0.0-3
2:28.0.0-4
2:28.0.0-5
2:28.0.0-6
2:29.*
2:29.0.0~rc1-1
2:29.0.0~rc1-2
2:29.0.0-1
2:29.0.0-2
2:29.0.0-3
2:29.0.1-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42998.json"