Bug 2563092 (CVE-2026-118256)

Summary:	CVE-2026-118256 vue-i18n: vue-i18n: HTML injection via unescaped named interpolation parameters
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dymurray, jmatthew, rjohnson, whayutin
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in vue-i18n. When parameter escaping is enabled, the library fails to properly sanitize named interpolation values if a translation call contains both list and named parameters. A remote attacker could exploit this vulnerability by supplying untrusted input to an application that renders translations as HTML. Successful exploitation can allow an attacker to inject arbitrary HTML markup or execute malicious scripts in a user's browser.	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 2026-10-28 18:47:04 UTC

Vue I18n is the internationalization plugin for Vue.js. From 9.0.0-beta.5 until 11.4.14 and 12.0.0-alpha.5, enabling escapeParameter, called escapeParameterHtml in the Legacy API, does not escape named interpolation values when the same translation call supplies both list and named values because escapeParams() processes only the list branch. Applications that render translations as HTML and pass untrusted named values with a list can insert attacker-controlled markup, including phishing links, forms, and layout changes, and can permit script execution when combined with the srcdoc sanitizer bypass or on releases without the sanitizer. This issue is fixed in versions 11.4.14 and 12.0.0-alpha.5.