What is CVE-2026-34915?

CVE-2026-34915 is a medium-severity vulnerability in Revive Adserver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-06-23.

How severe is CVE-2026-34915?

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

XSS in Revive Adserver

CVE-2026-34915

A missing sanitisation of user input in the zone-include.php script of Revive Adserver 6.0.6 and earlier could allow a low‑privileged user to exploit the clientid parameter to perform blind SQL injection attacks. Input sanitisation has been improved to ensure that all parameters processed by the script are properly validated.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (18.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Revive Adserver — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

support@hackerone.com

Frequently asked questions

What is CVE-2026-34915?: CVE-2026-34915 is a medium-severity vulnerability in Revive Adserver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-06-23.
How severe is CVE-2026-34915?: Medium severity. CVSS v3 base score is 6.1 out of 10.