How severe is CVE-2018-11105?

CVE-2018-11105 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-2018-11105 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11105?

CVE-2018-11105 affects 3cx Live Chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11105?

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

When was CVE-2018-11105 published?

CVE-2018-11105 was published on 2018-05-15 and last updated on 2026-06-17.

CVE-2018-11105

CVE-2018-11105 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% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: 3cx Live Chat
Published: 2018-05-15
Last modified: 2026-06-17

Description

There is stored cross site scripting in the wp-live-chat-support plugin before 8.0.08 for WordPress via the "name" (aka wplc_name) and "email" (aka wplc_email) input fields to wp-json/wp_live_chat_support/v1/start_chat whenever a malicious attacker would initiate a new chat with an administrator. NOTE: this issue exists because of an incomplete fix for CVE-2018-9864.

Frequently asked questions

What is CVE-2018-11105?: There is stored cross site scripting in the wp-live-chat-support plugin before 8.0.08 for WordPress via the "name" (aka wplc_name) and "email" (aka wplc_email) input fields to wp-json/wp_live_chat_support/v1/start_chat whenever a malicious attacker would initiate a new chat with an administrator. NOTE: this issue exists because of an incomplete fix for CVE-2018-9864.
How severe is CVE-2018-11105?: CVE-2018-11105 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-2018-11105 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11105?: CVE-2018-11105 affects 3cx Live Chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11105?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-11105 published?: CVE-2018-11105 was published on 2018-05-15 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in 3cx Live Chat

CVE-2019-12498 — Critical (CVSS 9.8): The WP Live Chat Support plugin before 8.0.33 for WordPress accepts certain REST API calls without invoking the…
CVE-2019-11185 — Critical (CVSS 9.8): The WP Live Chat Support Pro plugin through 8.0.26 for WordPress contains an arbitrary file upload vulnerability. This…
CVE-2018-12426 — Critical (CVSS 9.8): The WP Live Chat Support Pro plugin before 8.0.07 for WordPress is vulnerable to unauthenticated Remote Code Execution…
CVE-2014-10386 — Medium (CVSS 6.1): The wp-live-chat-support plugin before 4.1.0 for WordPress has JavaScript injections.
CVE-2017-18507 — Medium (CVSS 6.1): The wp-live-chat-support plugin before 7.1.05 for WordPress has XSS.
CVE-2019-14950 — Medium (CVSS 6.1): The wp-live-chat-support plugin before 8.0.27 for WordPress has XSS via the GDPR page.

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