How severe is CVE-2018-11331?

CVE-2018-11331 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11331?

CVE-2018-11331 affects Pluck-cms Pluck. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11331?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-11331 published?

CVE-2018-11331 was published on 2018-05-21 and last updated on 2026-06-17.

CVE-2018-11331

CVE-2018-11331 is a critical-severity vulnerability in Pluck-cms Pluck with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Pluck-cms Pluck
Published: 2018-05-21
Last modified: 2026-06-17

Description

An issue was discovered in Pluck before 4.7.6. Remote PHP code execution is possible because the set of disallowed filetypes for uploads in missing some applicable ones such as .phtml and .htaccess.

Frequently asked questions

What is CVE-2018-11331?: An issue was discovered in Pluck before 4.7.6. Remote PHP code execution is possible because the set of disallowed filetypes for uploads in missing some applicable ones such as .phtml and .htaccess.
How severe is CVE-2018-11331?: CVE-2018-11331 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11331?: CVE-2018-11331 affects Pluck-cms Pluck. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11331?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-11331 published?: CVE-2018-11331 was published on 2018-05-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pluck-cms:pluck:*:*:*:*:*:*:*:*

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