XSS in Revive Adserver
CVE-2026-50742
A stored XSS vulnerabilities exists in the `maintenance-acl-check.php` and `maintenance-banners-check.php` tools of Revive Adserver 6.0.7. The issue was caused by entity names being displayed without proper escaping when inconsistencies were detected. Whether the XSS payload is executed when an administrator uses the affected maintenance tools is not entirely under the attacker's control.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.2% 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: 0.003 · change: 0.000
Affected products
- Revive Adserver — versions 0
- Revive-Adserver Revive Adserver
Weakness classification (CWE)
References
- hackerone.com/reports/3781311 (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2026-50742?
- CVE-2026-50742 is a medium-severity vulnerability in Revive Adserver, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-26.
- How severe is CVE-2026-50742?
- Medium severity. CVSS v3 base score is 5.4 out of 10.