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VulnerabilityPublished

CVE-2026-102771: Naichen ThinkCMF · Template Injection

Affects Naichen ThinkCMFSource CVE Database V5

0
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Public exploit available · CVSS 5.1 Medium.

Data as of 13 Nov 2026, 23:53 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
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:P

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 29 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CISA SSVC: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by VulDB

    , 5 hours before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. CISA SSVC assessment

    proof of concept public

    , 16 hours after disclosure

  4. 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

ProductAffectedFixed in
NaichenThinkCMFAffected
  • 8.0.0 – 8.0.7
8 affected builds
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

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