How severe is CVE-2017-18542?

CVE-2017-18542 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-2017-18542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18542?

CVE-2017-18542 affects Bestwebsoft Zendesk Help Center. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18542?

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

When was CVE-2017-18542 published?

CVE-2017-18542 was published on 2019-08-16 and last updated on 2026-06-17.

CVE-2017-18542

CVE-2017-18542 is a medium-severity vulnerability in Bestwebsoft Zendesk Help Center 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% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Bestwebsoft Zendesk Help Center
Published: 2019-08-16
Last modified: 2026-06-17

Description

The zendesk-help-center plugin before 1.0.5 for WordPress has multiple XSS issues.

Frequently asked questions

What is CVE-2017-18542?: The zendesk-help-center plugin before 1.0.5 for WordPress has multiple XSS issues.
How severe is CVE-2017-18542?: CVE-2017-18542 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-2017-18542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18542?: CVE-2017-18542 affects Bestwebsoft Zendesk Help Center. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18542?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18542 published?: CVE-2017-18542 was published on 2019-08-16 and last updated on 2026-06-17.

References

https://wordpress.org/plugins/zendesk-help-center/#developers

Affected products (1)

cpe:2.3:a:bestwebsoft:zendesk_help_center:*:*:*:*:*:wordpress:*:*

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