What is CVE-2023-38040?

CVE-2023-38040 is a medium-severity vulnerability in Revive Adserver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-09-17.

How severe is CVE-2023-38040?

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

Is CVE-2023-38040 known to be exploited?

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

XSS in Revive Adserver

CVE-2023-38040

A reflected XSS vulnerability exists in Revive Adserver 5.4.1 and earlier versions..

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-09-17 · 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: 0.021 (81.3th percentile), scored 2026-10-28.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Revive Adserver — versions 5.4.1
Revive-Adserver Revive Adserver

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

hackerone.com/reports/1694171 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-38040?: CVE-2023-38040 is a medium-severity vulnerability in Revive Adserver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-09-17.
How severe is CVE-2023-38040?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-38040 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.