CVE-2026-116672

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Source
https://cve.org/CVERecord?id=CVE-2026-116672
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-116672.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-116672
Aliases
Downstream
CGA (2)
DEBIAN (1)
ECHO (1)
MINI (1)
openSUSE (1)
ROOT (1)
UBUNTU (1)
Related
Published
2026-10-27T16:31:48Z
Modified
2026-11-03T17:27:20Z
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
Authlib RFC 7592 examples omit registration-access-token client binding
Details

Authlib is a Python library which builds OAuth and OpenID Connect servers. From 0.15 until 1.9.1, the documented ClientConfigurationEndpoint.authenticate_client and ClientConfigurationEndpoint.check_permission reference implementations look up a target client from request-controlled client_id data and check only whether that target is editable, without verifying that request.credential belongs to the target client. Deployments following both examples can allow a client holding any valid registration access token to read, modify, or delete another client's registration. Changing redirect_uris can enable authorization code or token interception, while deleting registrations can deny service to affected clients. This issue is fixed in version 1.9.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1188",
        "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116672.json"
}
References

Affected packages

Git / github.com/authlib/authlib

Affected ranges

Type
GIT
Repo
https://github.com/authlib/authlib
Events
Introduced
4e501ce3e58e2daaaba0b82018b047bb61741f0c
Fixed
46b94870d915ee77430da8fa2a358378d90b3a45
Fixed
1bd2a313492ce0a4d0571c150730907aa3fc91ff
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0.15"
                },
                {
                    "fixed": "1.9.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "1bd2a313492ce0a4d0571c150730907aa3fc91ff"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v1.9.1",
            "range": [
                {
                    "fixed": "46b94870d915ee77430da8fa2a358378d90b3a45"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

1.*
1.7.1
v0.*
v0.15
v1.*
v1.0.0
v1.0.1
v1.1.0
v1.2.0
v1.2.1
v1.3.0
v1.3.2
v1.4.0
v1.4.1
v1.5.0
v1.5.1
v1.5.2
v1.6.0
v1.6.1
v1.6.2
v1.6.3
v1.6.4
v1.6.5
v1.6.6
v1.7.0
v1.7.1
v1.7.2
v1.8.0
v1.9.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-116672.json"