{"id":"CVE-2026-105800","title":"i18next-http-backend is a backend layer for i18next that loads translation resources in Node.js, browsers, and Deno","summary":"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 beg…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-74","CWE-918"],"vendor":"i18next-http-backend","product":"i18next-http-backend","affected":["i18next-http-backend < 4.0.2"],"patched":["i18next-http-backend 4.0.2"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T18:16:47.547","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105800","references":[{"url":"https://github.com/i18next/i18next-http-backend/commit/07e028862b25d0b9251bf3cafb92be2d35285f85","label":"security-advisories@github.com"},{"url":"https://github.com/i18next/i18next-http-backend/releases/tag/v4.0.2","label":"security-advisories@github.com"},{"url":"https://github.com/i18next/i18next-http-backend/security/advisories/GHSA-xvq9-wjp8-hwqf","label":"security-advisories@github.com"},{"url":"https://github.com/i18next/i18next-http-backend/security/advisories/GHSA-xvq9-wjp8-hwqf","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105800"},{"url":"https://github.com/advisories/GHSA-xvq9-wjp8-hwqf"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105800.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-105800"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546630"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-105800"}],"tags":["nvd","ghsa","npm","cve.org","exploit-available","csaf","vex","red-hat"],"aliases":["GHSA-xvq9-wjp8-hwqf"],"ecosystem":"npm","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T17:18:55.474264Z"},"ingestedAt":"2026-10-06T15:01:49.297Z","epss":0.00289,"epssPercentile":0.21341,"slug":"CVE-2026-105800","body":"## Overview\n\ni18next-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-105800)\n\nAffected packages:\n\n- `i18next-http-backend < 4.0.2`\n\nPatched in:\n\n- `i18next-http-backend 4.0.2`\n\nSource: https://github.com/advisories/GHSA-xvq9-wjp8-hwqf\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Migration Toolkit for Applications 8, Multicluster Engine for Kubernetes, Network Observability Operator, OpenShift Service Mesh 3, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat AMQ Broker 7, … · no fix planned: OpenShift Service Mesh 3, Red Hat Ansible Automation Platform 2, Migration Toolkit for Applications 8, Multicluster Engine for Kubernetes, … · updated 2026-10-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105800.json)","depth":"twilight","depthScore":32,"depthScoreParts":{"impact":20.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":216669,"id":"CVE-2026-105800","ts":1791310397891,"field":"exploit_available","old":"false","new":"true"}]}