What is CVE-2023-39370?

CVE-2023-39370 is a high-severity vulnerability in Startrinity Softswitch, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2023-09-03.

How severe is CVE-2023-39370?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Startrinity Softswitch

CVE-2023-39370

StarTrinity Softswitch version 2023-02-16 - Persistent XSS (CWE-79)

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-09-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Startrinity Softswitch — versions 2023-02-16, version 2023-02-16

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.gov.il/en/Departments/faq/cve_advisories (Third Party Advisory)

Frequently asked questions

What is CVE-2023-39370?: CVE-2023-39370 is a high-severity vulnerability in Startrinity Softswitch, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2023-09-03.
How severe is CVE-2023-39370?: High severity. CVSS v3 base score is 8.8 out of 10.