CVE-2026-115730

i18next-http-backend 4.0.2 Protocol-Relative URL Injection via Namespace in interpolateUrl

Published Oct 23, 2026 CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
Description
i18next-http-backend 4.0.2 contains an incomplete fix in interpolateUrl() that allows attackers to redirect translation requests by supplying an ns value starting with a slash. Attackers controlling the namespace value can form a protocol-relative URL in loadPath or addPath templates to load attacker-hosted translations, enabling UI content injection and cross-site scripting.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-9jhj-wvmw-cfx5 i18next-http-backend: Namespace value starting with / forms a protocol-relative URL when loadPath/addPath places {{ns}} right after a / (bypass of the // check added for GHSA-xvq9-wjp8-hwqf)
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description i18next-http-backend 4.0.2 contains an incomplete fix in interpolateUrl() that allows attackers to redirect translation requests by supplying an ns value starting with a slash. Attackers controlling the namespace value can form a protocol-relative URL in loadPath or addPath templates to load attacker-hosted translations, enabling UI content injection and cross-site scripting.
Title i18next-http-backend 4.0.2 Protocol-Relative URL Injection via Namespace in interpolateUrl
First Time appeared I18next
I18next i18next-http-backend
Weaknesses CWE-74
CPEs cpe:2.3:a:i18next:i18next-http-backend:*:*:*:*:*:*:*:*
Vendors & Products I18next
I18next i18next-http-backend
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 29, 2026, 1:19 PM
Reserved
Oct 23, 2026, 11:40 AM
Status
Awaiting Analysis
Published
Oct 23, 2026, 1:17 PM
Modified
Oct 29, 2026, 2:17 PM
Severity
Low
Public date
Oct 23, 2026, 12:55 PM