How severe is CVE-2023-4110?

CVE-2023-4110 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-2023-4110 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4110?

CVE-2023-4110 affects Phpjabbers Availability Booking Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4110?

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

When was CVE-2023-4110 published?

CVE-2023-4110 was published on 2023-08-03 and last updated on 2026-06-17.

CVE-2023-4110

CVE-2023-4110 is a low-severity vulnerability in Phpjabbers Availability Booking Calendar 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: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Phpjabbers Availability Booking Calendar
Published: 2023-08-03
Last modified: 2026-06-17

Description

A vulnerability has been found in PHP Jabbers Availability Booking Calendar 5.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /index.php. The manipulation of the argument session_id leads to cross site scripting. The attack can be launched remotely. The identifier VDB-235957 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2023-4110?: A vulnerability has been found in PHP Jabbers Availability Booking Calendar 5.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /index.php. The manipulation of the argument session_id leads to cross site scripting. The attack can be launched remotely. The identifier VDB-235957 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2023-4110?: CVE-2023-4110 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-2023-4110 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4110?: CVE-2023-4110 affects Phpjabbers Availability Booking Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4110?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4110 published?: CVE-2023-4110 was published on 2023-08-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpjabbers:availability_booking_calendar:5.0:*:*:*:*:*:*:*

More vulnerabilities in Phpjabbers Availability Booking Calendar

CVE-2023-36133 — Critical (CVSS 9.8): PHPJabbers Availability Booking Calendar 5.0 is vulnerable to User Account Takeover through username/password change.
CVE-2023-36132 — Critical (CVSS 9.8): PHP Jabbers Availability Booking Calendar 5.0 is vulnerable to Incorrect Access Control.
CVE-2023-36131 — Critical (CVSS 9.8): PHPJabbers Availability Booking Calendar 5.0 is vulnerable to Incorrect Access Control due to improper input validation…
CVE-2023-48207 — High (CVSS 8.8): Availability Booking Calendar 5.0 allows CSV injection via the unique ID field in the Reservations list component.
CVE-2023-48831 — High (CVSS 7.5): A lack of rate limiting in pjActionAJaxSend in Availability Booking Calendar 5.0 allows attackers to cause resource…
CVE-2023-48208 — Medium (CVSS 6.1): A Cross Site Scripting vulnerability in Availability Booking Calendar 5.0 allows an attacker to inject JavaScript via…

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