i18next-http-backend is a backend layer for i18next that loads translation resources in Node.js, browsers, and Deno. Prior to 4.0.2, attacker-controlled language or namespace values interpolated into a custom loadPath or addPath that begins directly with {{lng}} or {{ns}} can make colon-based input become an absolute URL or, in browsers, make a double-slash namespace become a protocol-relative URL. The resulting request can leave the intended origin and cause URL injection or server-side request forgery. The default /locales/{{lng}}/{{ns}}.json template and templates with a leading path or origin are not affected because the placeholder does not occupy the URLs structural beginning. This issue is fixed in version 4.0.2.
Weakness
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/10.html
- https://cwe.mitre.org/data/definitions/101.html
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- https://cwe.mitre.org/data/definitions/28.html
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- https://cwe.mitre.org/data/definitions/34.html
- https://cwe.mitre.org/data/definitions/42.html
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- https://cwe.mitre.org/data/definitions/9.html
References
- https://github.com/i18next/i18next-http-backend/commit/07e028862b25d0b9251bf3cafb92be2d35285f85
- https://github.com/i18next/i18next-http-backend/releases/tag/v4.0.2
- https://github.com/i18next/i18next-http-backend/security/advisories/GHSA-xvq9-wjp8-hwqf
- https://github.com/i18next/i18next-http-backend/security/advisories/GHSA-xvq9-wjp8-hwqf