CVE-2026-8890

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Source

https://cve.org/CVERecord?id=CVE-2026-8890

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8890.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-8890

Published

2026-05-26T18:23:13Z

Modified

2026-10-28T02:31:14Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

code100x Mobile API Authentication Bypass via Header Spoofing

Details

code100x contains an authentication bypass vulnerability in the Mobile API that allows unauthenticated attackers to impersonate arbitrary users by supplying a crafted JSON payload in the 'g' HTTP header. The middleware in middleware.ts skips identity header generation when an Auth-Key header is present without validating its value, allowing attackers to inject a spoofed user identity header that the downstream route handler in the mobile courses endpoint accepts as trusted, granting unauthorized access to course data belonging to any enrolled user or administrator.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8890.json"
}

References

Affected packages

Git / github.com/code100x/cms

Affected ranges

Type

GIT

Repo

https://github.com/code100x/cms

Events

Introduced

Fixed

90b489ee7c63c301107d6374d4b3f2b8e4060fe5

Fixed

88c6c5e94e23da101235c4c7e9c7591ac1016549

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "90b489ee7c63c301107d6374d4b3f2b8e4060fe5"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "88c6c5e94e23da101235c4c7e9c7591ac1016549"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8890.json"