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Fencer Vulns
medium 6.5

CVE-2018-16636 json

Nucleus CMS 3.70 allows HTML Injection via the index.php body parameter.

published 2018-12-10 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-8441

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

Nucleus CMS 3.70 allows HTML Injection via the index.php body parameter.

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/NucleusCMS/NucleusCMS/issues/84 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/security-breachlock/CVE-2018-16636/blob/master/nucleus_html.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.