How severe is CVE-2023-3543?

CVE-2023-3543 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-3543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3543?

CVE-2023-3543 affects Gzscripts Availability Booking Calendar Php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-3543?

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

When was CVE-2023-3543 published?

CVE-2023-3543 was published on 2023-07-07 and last updated on 2026-06-17.

CVE-2023-3543

CVE-2023-3543 is a low-severity vulnerability in Gzscripts Availability Booking Calendar Php with a CVSS 3.x base score of 3.5. 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: Low (CVSS 3.x base score 3.5)
CVSS v2: 4.0
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Gzscripts Availability Booking Calendar Php
Published: 2023-07-07
Last modified: 2026-06-17

Description

A vulnerability was found in GZ Scripts Availability Booking Calendar PHP 1.8. It has been classified as problematic. This affects an unknown part of the file load.php of the component HTTP POST Request Handler. The manipulation of the argument cid/first_name/second_name/address_1/country leads to cross site scripting. It is possible to initiate the attack remotely. The associated identifier of this vulnerability is VDB-233295. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2023-3543?: A vulnerability was found in GZ Scripts Availability Booking Calendar PHP 1.8. It has been classified as problematic. This affects an unknown part of the file load.php of the component HTTP POST Request Handler. The manipulation of the argument cid/first_name/second_name/address_1/country leads to cross site scripting. It is possible to initiate the attack remotely. The associated identifier of this vulnerability is VDB-233295. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2023-3543?: CVE-2023-3543 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-3543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3543?: CVE-2023-3543 affects Gzscripts Availability Booking Calendar Php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-3543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-3543 published?: CVE-2023-3543 was published on 2023-07-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gzscripts:availability_booking_calendar_php:1.8:*:*:*:*:*:*:*

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