How severe is CVE-2023-40659?

CVE-2023-40659 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-2023-40659 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40659?

CVE-2023-40659 affects Joomboost Easy Quick Contact. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40659?

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

When was CVE-2023-40659 published?

CVE-2023-40659 was published on 2023-12-14 and last updated on 2026-06-17.

CVE-2023-40659

CVE-2023-40659 is a medium-severity vulnerability in Joomboost Easy Quick Contact 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)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Joomboost Easy Quick Contact
Published: 2023-12-14
Last modified: 2026-06-17

Description

A reflected XSS vulnerability was discovered in the Easy Quick Contact module for Joomla.

Frequently asked questions

What is CVE-2023-40659?: A reflected XSS vulnerability was discovered in the Easy Quick Contact module for Joomla.
How severe is CVE-2023-40659?: CVE-2023-40659 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-2023-40659 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40659?: CVE-2023-40659 affects Joomboost Easy Quick Contact. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40659?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-40659 published?: CVE-2023-40659 was published on 2023-12-14 and last updated on 2026-06-17.

References

https://extensions.joomla.org/extension/contacts-and-feedback/contact-forms/easy-quick-contact/

Affected products (1)

cpe:2.3:a:joomboost:easy_quick_contact:*:*:*:*:*:joomla\!:*:*

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