CVE-2026-42998

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Source
https://cve.org/CVERecord?id=CVE-2026-42998
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42998.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42998
Aliases
Downstream
Related
Published
2026-05-28T00:00:00Z
Modified
2026-07-08T08:13:26.810395627Z
Severity
  • 6.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L 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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42998.json",
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-863"
    ],
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "14.0.0"
                },
                {
                    "fixed": "27.0.2"
                },
                {
                    "introduced": "28.0.0"
                },
                {
                    "fixed": "28.0.2"
                },
                {
                    "introduced": "29.0.0"
                },
                {
                    "fixed": "29.0.2"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "14.0.0"
                },
                {
                    "fixed": "27.0.2"
                },
                {
                    "introduced": "28.0.0"
                },
                {
                    "fixed": "28.0.2"
                },
                {
                    "introduced": "29.0.0"
                },
                {
                    "fixed": "29.0.2"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "fixed": "29.0.2"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/openstack/keystone

Affected ranges

Type
GIT
Repo
https://github.com/openstack/keystone
Events
Introduced
c767e254979c96858a81cc4bbe8d9773d4dd539b
Fixed
b896b71557ce8370c442fe05818a74d7a9a623a8
Introduced
a568938e0c967a56ade269c93f42718008487b14
Fixed
3dfbbe7b9bd11dcd64420da0e4eda48b637f4a70
Introduced
3526925ae34a66e626bec985628a421a7694168e
Fixed
7b9f39226744b8db50a6d702cc5f715fc9c17f37
Database specific 
{
    "cpe": "cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "14.0.0"
        },
        {
            "fixed": "27.0.2"
        },
        {
            "introduced": "28.0.0"
        },
        {
            "fixed": "28.0.2"
        },
        {
            "introduced": "29.0.0"
        },
        {
            "fixed": "29.0.2"
        }
    ]
}

Affected versions

28.*
28.0.0
28.0.0.0rc1
28.0.1
29.*
29.0.0
29.0.0.0rc1
29.0.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42998.json"