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.

CVSS 4.0

2.0CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

4.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

EPSS

0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-25)

CWEs

CWE-791, CWE-1336

Published

2026-09-29

Modified

2026-09-30

Record from

the NVD, synced 2026-10-19

References

• https://github.com/coolcj-stack/ThinkCMF-v8.0.1-SSTI-Vulnerability/blob/main/ThinkCMF_Vulnerability_Report_EN.docx
• https://vuldb.com/cve/CVE-2026-102771
• https://vuldb.com/submit/943081
• https://vuldb.com/vuln/411468
• https://vuldb.com/vuln/411468/cti

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