Bug 2571789 (CVE-2026-108559)

Summary:	CVE-2026-108559 revive-adserver: revive-adserver: Cross-Site Scripting via unencoded iframe invocation parameters
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability-draft	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in revive-adserver. An unauthenticated remote attacker could execute arbitrary scripts in the context of an authenticated user's session by tricking them into visiting a specially crafted URL. This reflected Cross-Site Scripting (XSS) vulnerability occurs because the application fails to properly encode frame width and height parameters when generating iframe invocation tags.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2026-11-11 17:41:36 UTC

A reflected cross-site scripting vulnerability in the iframe invocation options of Revive Adserver 6.0.8 and earlier allows an unauthenticated attacker to execute JavaScript in an authenticated user's browser by persuading them to visit a crafted URL. When generating invocation tags for an any-size zone, the frame_width and frame_height request parameters are included in HTML attributes without appropriate encoding. The issue is fixed in Revive Adserver 6.0.9 by HTML-encoding the affected values in the invocation-option form fields.