What is CVE-2023-4802?

CVE-2023-4802 is a medium-severity vulnerability in Proofpoint Insider Threat Management, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-09-13.

How severe is CVE-2023-4802?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Proofpoint Insider Threat Management

CVE-2023-4802

A reflected cross-site scripting vulnerability in the UpdateInstalledSoftware endpoint of the Insider Threat Management (ITM) Server's web console could be used by an authenticated administrator to run arbitrary javascript within another web console administrator's browser. All versions prior to 7.14.3.69 are affected.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-09-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (26.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.2% 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: +0.001

Affected products

Proofpoint Insider Threat Management
Proofpoint Itm Server — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-007 (Broken Link)
www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0007 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-4802?: CVE-2023-4802 is a medium-severity vulnerability in Proofpoint Insider Threat Management, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-09-13.
How severe is CVE-2023-4802?: Medium severity. CVSS v3 base score is 4.8 out of 10.