{"answers":{"affected":"2 open source packages ship an affected version, including i18next-http-backend.","exploited":"There is no known exploitation of CVE-2026-118258 in the wild and no public exploit code.","fix":"Upgrade i18next-http-backend to 4.0.4 or later.","what":"CVE-2026-118258 is a low-severity vulnerability in i18next-http-backend, published on 28 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-118258 and fix it if it is affected.\n\nWhat it is: CVE-2026-118258 is a low-severity vulnerability in i18next-http-backend, published on 28 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-118258 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- i18next-http-backend (npm): affected all versions; fixed in 4.0.4\n- i18next-http-backend (npm): affected all versions; fixed in 4.0.4\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-118258/ (Markdown: https://insights.sbomify.com/CVE-2026-118258/index.md)","id":"CVE-2026-118258","markdown":"https://insights.sbomify.com/CVE-2026-118258/index.md","name":"CVE-2026-118258","record":{"aliases":["GHSA-3cmx-xjww-583x","UBUNTU-CVE-2026-118258"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"i18next-http-backend is a backend layer for i18next that loads translation resources in Node.js, browsers, and Deno. Prior to 4.0.4, interpolateUrl inserts unencoded language and namespace values into loadPath or addPath templates without rejecting ampersand (\u0026), equals (=), or semicolon (;) query separators. When a template places lng or ns in the query string and an attacker controls that value, the attacker can add or override parameters on browser or server-side translation requests, potentially exposing other namespaces or tenants or changing backend behavior through the application's network position and credentials. This vulnerability is the result of an incomplete fix for CVE-2026-41691. This issue is fixed in version 4.0.4.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"i18next-http-backend: Query-parameter injection through \u0026 and = in lng when loadPath/addPath puts {{lng}} in the query string","id":"CVE-2026-118258","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing","id":"CVE-2026-118259"},"packages":[{"ecosystem":"npm","fixed":["4.0.4"],"introduced":["0"],"last_affected":[],"package":"i18next-http-backend","purl":null,"source":"GHSA-3cmx-xjww-583x"},{"ecosystem":"npm","fixed":["4.0.4"],"introduced":["0"],"last_affected":[],"package":"i18next-http-backend","purl":"pkg:npm/i18next-http-backend","source":"GHSA-3cmx-xjww-583x"}],"prev":{"headline":"Vue I18n: escapeParameter does not prevent XSS through srcdoc in translation messages","id":"CVE-2026-118257"},"products":["i18next-http-backend"],"published":"2026-10-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-28","vendors":["i18next"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-118258/"}