How severe is CVE-2018-9864?

CVE-2018-9864 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-9864 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-9864?

CVE-2018-9864 affects 3cx Live Chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-9864?

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

When was CVE-2018-9864 published?

CVE-2018-9864 was published on 2018-04-09 and last updated on 2026-06-17.

CVE-2018-9864

CVE-2018-9864 is a medium-severity vulnerability in 3cx Live Chat with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: 3cx Live Chat
Published: 2018-04-09
Last modified: 2026-06-17

Description

The WP Live Chat Support plugin before 8.0.06 for WordPress has stored XSS via the Name field.

Frequently asked questions

What is CVE-2018-9864?: The WP Live Chat Support plugin before 8.0.06 for WordPress has stored XSS via the Name field.
How severe is CVE-2018-9864?: CVE-2018-9864 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-9864 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-9864?: CVE-2018-9864 affects 3cx Live Chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-9864?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-9864 published?: CVE-2018-9864 was published on 2018-04-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:3cx:live_chat:*:*:*:*:*:wordpress:*:*

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