Vulnerability in Naichen Thinkcmf
CVE-2026-102771
A security vulnerability has been detected in Naichen ThinkCMF up to 8.0.7. Affected by this issue is the function MailController::templatePut of the file cmf-api/src/admin/controller/MailController.php of the component Email Template. The manipulation leads to improper neutralization of special elements used in a template engine. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Naichen Thinkcmf — versions 8.0.0, 8.0.1, 8.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/411468 (technical-description, vdb-entry)
- vuldb.com/vuln/411468/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-102771 (third-party-advisory)
- vuldb.com/submit/943081 (third-party-advisory)
- github.com/coolcj-stack/ThinkCMF-v8.0.1-SSTI-Vulnerability/blob/main/ThinkCMF_V… (exploit)
Frequently asked questions
- What is CVE-2026-102771?
- CVE-2026-102771 is a medium-severity vulnerability in Naichen Thinkcmf, classified under CWE-791. CVSS score: 4.7/10. Published 2026-09-29.
- How severe is CVE-2026-102771?
- Medium severity. CVSS v3 base score is 4.7 out of 10.