How severe is CVE-2019-11871?

CVE-2019-11871 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-11871 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11871?

CVE-2019-11871 affects Custom Field Suite Project Custom Field Suite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11871?

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

When was CVE-2019-11871 published?

CVE-2019-11871 was published on 2019-05-10 and last updated on 2026-06-17.

CVE-2019-11871

CVE-2019-11871 is a medium-severity vulnerability in Custom Field Suite Project Custom Field Suite with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Custom Field Suite Project Custom Field Suite
Published: 2019-05-10
Last modified: 2026-06-17

Description

The Custom Field Suite plugin before 2.5.15 for WordPress has XSS for editors or admins.

Frequently asked questions

What is CVE-2019-11871?: The Custom Field Suite plugin before 2.5.15 for WordPress has XSS for editors or admins.
How severe is CVE-2019-11871?: CVE-2019-11871 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-11871 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11871?: CVE-2019-11871 affects Custom Field Suite Project Custom Field Suite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11871?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-11871 published?: CVE-2019-11871 was published on 2019-05-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:custom_field_suite_project:custom_field_suite:*:*:*:*:*:wordpress:*:*

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