CVE-2026-111352: Auth Bypass (CVSS 8.8)

Description

ThinkCMF through 8.0.1 contains an incorrect authorization vulnerability in RestAdminBaseController that allows restricted backend administrators to call every admin REST API endpoint because Auth::check() fails open when no admin_api rule exists. Attackers with a valid admin-type API token can list member emails and mobile numbers, disable members, and call PUT admin/roles/{id}/authorize to grant themselves full administrator rights.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0046

Probability of exploitation

0.40%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-863 Incorrect Authorization

References

Other References

https://github.com/thinkcmf/cmf-api/blob/v8.0.7/src/admin/controller/RoleController.php#L345-L381 https://github.com/thinkcmf/cmf-core/blob/v8.0.3/src/controller/RestAdminBaseController.php#L15-L34 https://github.com/thinkcmf/cmf-core/blob/v8.0.3/src/lib/Auth.php#L40-L61 https://hackmd.io/@hieuPenguinnn/thinkcmf-admin-rest-api-missing-authorization https://www.vulncheck.com/advisories/thinkcmf-through-8.0.1-incorrect-authorization-in-admin-rest-api

Frequently Asked Questions

What is CVE-2026-111352? +

ThinkCMF through 8.0.1 contains an incorrect authorization vulnerability in RestAdminBaseController that allows restricted backend administrators to call every admin REST API endpoint because Auth::check() fails open when no admin_api rule exists. Attackers with a valid admin-type API token can list member emails and mobile numbers, disable members, and call PUT admin/roles/{id}/authorize to grant themselves full administrator rights. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-111352? +

CVE-2026-111352 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0046, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-111352? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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