CVE-2026-115730

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

LOW
3.1
CVSS Score
Published: October 23, 2026 at 12:55 PM UTC
Updated: October 29, 2026 at 02:17 PM UTC
1 product affected across 1 vendorI18NEXT HTTP Backend

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Severity
LOW3.1
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.1LOWVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-74

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