How severe is CVE-2023-36137?

CVE-2023-36137 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-2023-36137 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36137?

CVE-2023-36137 affects Phpjabbers Class Scheduling System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-36137?

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

When was CVE-2023-36137 published?

CVE-2023-36137 was published on 2023-08-04 and last updated on 2026-06-17.

CVE-2023-36137

CVE-2023-36137 is a medium-severity vulnerability in Phpjabbers Class Scheduling System 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% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Phpjabbers Class Scheduling System
Published: 2023-08-04
Last modified: 2026-06-17

Description

There is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Class Scheduling System 1.0.

Frequently asked questions

What is CVE-2023-36137?: There is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Class Scheduling System 1.0.
How severe is CVE-2023-36137?: CVE-2023-36137 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-2023-36137 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36137?: CVE-2023-36137 affects Phpjabbers Class Scheduling System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-36137?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-36137 published?: CVE-2023-36137 was published on 2023-08-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpjabbers:class_scheduling_system:1.0:*:*:*:*:*:*:*

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