How severe is CVE-2018-16636?

CVE-2018-16636 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-16636 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16636?

CVE-2018-16636 affects Nucleuscms Nucleus Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16636?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-16636 published?

CVE-2018-16636 was published on 2018-12-10 and last updated on 2026-06-17.

CVE-2018-16636

CVE-2018-16636 is a medium-severity vulnerability in Nucleuscms Nucleus Cms with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Nucleuscms Nucleus Cms
Published: 2018-12-10
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2018-16636?: Nucleus CMS 3.70 allows HTML Injection via the index.php body parameter.
How severe is CVE-2018-16636?: CVE-2018-16636 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-16636 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16636?: CVE-2018-16636 affects Nucleuscms Nucleus Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16636?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-16636 published?: CVE-2018-16636 was published on 2018-12-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nucleuscms:nucleus_cms:3.70:*:*:*:*:*:*:*

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