CVE intelligence and bounded remediation

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

Medium CVSS 5.4

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.

Severity
Medium
CVSS
5.4 (3.1)
Published
2026-06-26
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • revive-adserver / revive_adserver

Matched remediation archetype

Cross-site scripting and unsafe browser output

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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