Bug 2563093 (CVE-2026-118258)

Summary:	CVE-2026-118258 i18next-http-backend: i18next-http-backend: Information disclosure via query parameter injection
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, csuconic, dbruscin, dpaolell, dschmidt, gparvin, gtully, jbalunas, jdelft, jlanda, jsherman, jupierce, jwong, kshier, kvanderr, lgarciaa, mbiarnes, omaciel, pjindal, ppalepu, ppostler, prdhamdh, rbobbitt, rgemmell, rgodfrey, rhaigner, rjohnson, sghai, sidsharm, simaishi, stcannon, suppawar, tbish, tlavocat, tsze, vlaad, yguenane
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in i18next-http-backend. A remote attacker who controls language or namespace input values can cause information disclosure by injecting unexpected query parameters into translation request URLs. Because the component fails to sanitize query separators during URL interpolation, an attacker can manipulate request parameters to access unauthorized translation data across namespaces or alter backend request behavior.	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 18:48:35 UTC

i18next-http-backend is a backend layer for i18next that loads translation resources in Node.js, browsers, and Deno. Prior to 4.0.4, interpolateUrl inserts unencoded language and namespace values into loadPath or addPath templates without rejecting ampersand (&), equals (=), or semicolon (;) query separators. When a template places lng or ns in the query string and an attacker controls that value, the attacker can add or override parameters on browser or server-side translation requests, potentially exposing other namespaces or tenants or changing backend behavior through the application's network position and credentials. This vulnerability is the result of an incomplete fix for CVE-2026-41691. This issue is fixed in version 4.0.4.