{"cve":"CVE-2026-105800","nvd":{"published":"2026-10-06T15:17:17.173","modified":"2026-10-06T18:16:47.547","status":"Deferred","description":"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 URL's structural beginning. This issue is fixed in version 4.0.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.7},"cwes":["CWE-74","CWE-918"],"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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-105800","score":0.00289,"percentile":0.21262,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-xvq9-wjp8-hwqf","url":"https://osv.dev/vulnerability/GHSA-xvq9-wjp8-hwqf","summary":"i18next-http-backend incomplete URL validation permits SSRF","modified":"2026-10-24T02:56:54.265759056Z","packages":[{"ecosystem":"npm","name":"i18next-http-backend","purl":"pkg:npm/i18next-http-backend","ranges":["<4.0.2"],"fixed":["4.0.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}