CVE-2026-102771: Naichen ThinkCMF · Template Injection
Affects Naichen ThinkCMFSource CVE Database V5
Public exploit available · CVSS 5.1 Medium.
Data as of 13 Nov 2026, 23:53 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- Proof of concept is public or traded
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-09-30.
CVSS: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:PExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 29 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CISA SSVC: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by VulDB
, 5 hours before disclosure
CVE published
on cve.org
, t = 0
CISA SSVC assessment
proof of concept public
, 16 hours after disclosure
In Threat Radar
record ingested
, 27 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| NaichenThinkCMF | Affected
| Fixed in– |
CPE configurations (1)
cpe:2.3:a:thinkcmf:thinkcmf:*:*:*:*:*:*:*:*
AI-suggested
Users should consider restricting access to the affected MailController::templatePut function and monitor for suspicious activity related to email template manipulation. Applying custom input validation or sanitization on template inputs may reduce risk until an official patch is released. Stay alert for any future vendor advisories or updates.
Description
CVE-2026-102771 is a medium severity vulnerability in Naichen ThinkCMF versions 8.0.0 through 8.0.7. It involves improper neutralization of special elements in the MailController::templatePut function of the Email Template component, allowing remote manipulation of the template engine. The vulnerability has publicly disclosed exploit code, but no vendor response or patch is available.
References
- vuldb.com/vuln/411468 (opens in a new tab)
- vuldb.com/vuln/411468/cti (opens in a new tab)
- vuldb.com/cve/CVE-2026-102771 (opens in a new tab)
- vuldb.com/submit/943081 (opens in a new tab)
- github.com/coolcj-stack/ThinkCMF-v8.0.1-SSTI-Vulnerability/blob/main/ThinkCMF_Vulnerability_Report_EN.docx (opens in a new tab)