What is CVE-2023-48208?

CVE-2023-48208 is a medium-severity vulnerability in Phpjabbers Availability Booking Calendar, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-12-07.

How severe is CVE-2023-48208?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2023-48208 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Phpjabbers Availability Booking Calendar

CVE-2023-48208

A Cross Site Scripting vulnerability in Availability Booking Calendar 5.0 allows an attacker to inject JavaScript via the name, plugin_sms_api_key, plugin_sms_country_code, uuid, title, or country name parameter to index.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-12-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Phpjabbers Availability Booking Calendar — versions 5.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

packetstormsecurity.com/files/175805 (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2023-48208?: CVE-2023-48208 is a medium-severity vulnerability in Phpjabbers Availability Booking Calendar, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-12-07.
How severe is CVE-2023-48208?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-48208 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.