CVE-2026-42999

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Source
https://cve.org/CVERecord?id=CVE-2026-42999
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42999.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42999
Aliases
Downstream
CGA (12)
DEBIAN (1)
UBUNTU (1)
Related
Published
2026-05-28T00:00:00Z
Modified
2026-08-12T03:51:19Z
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 RBAC policy enforcer in enforce_call unconditionally merges the raw JSON request body into the policy enforcement dictionary via policy_dict.update(json_input.copy()), overwriting trusted target data that was previously set from database lookups. Because flask.request.get_json is called with force=True, this works regardless of Content-Type or HTTP method. Any authenticated user can inject arbitrary policy target attributes (e.g., user_id, project_id) into the request body to bypass RBAC checks and perform unauthorized operations on resources belonging to other users or projects. This was introduced in commit 5ea59f52 (Rocky/14.0.0).

Database specific 
{
    "cna_assigner":  "mitre",
    "cwe_ids":  [
        "CWE-863"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42999.json",
    "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"
        },
        {
            "extracted_events":  [
                {
                    "fixed":  "29.0.2"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}
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
Show details 
{
    "cpe":  "cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*",
    "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_RANGE"
}

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-2026-42999.json"