{"answers":{"affected":"4 open source packages ship an affected version, including @vitest/mocker.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112949 exists.","fix":"Upgrade @vitest/mocker to a fixed version for your release line: 4.1.12 or 5.0.3.","what":"CVE-2026-112949 is a medium-severity vulnerability in @vitest mocker, published on 20 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-112949 and fix it if it is affected.\n\nWhat it is: CVE-2026-112949 is a medium-severity vulnerability in @vitest mocker, published on 20 Oct 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112949 exists.\n\nAffected packages and fixed versions:\n- @vitest/mocker (npm): affected from 2.1.0-beta.7; fixed in 4.1.12\n- @vitest/mocker (npm): affected from 2.1.0-beta.7; fixed in 4.1.12\n- @vitest/mocker (npm): affected from 5.0.0-beta.1; fixed in 5.0.3\n- @vitest/mocker (npm): affected from 5.0.0-beta.1; fixed in 5.0.3\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-2026-112949/ (Markdown: https://insights.sbomify.com/CVE-2026-112949/index.md)","id":"CVE-2026-112949","markdown":"https://insights.sbomify.com/CVE-2026-112949/index.md","name":"CVE-2026-112949","record":{"aliases":["CLSA-2026-1793114894","CLSA-2026-1793115217","GHSA-qxg6-89mg-rqv8"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":4.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"},{"id":"CWE-116","name":"Improper Encoding or Escaping of Output"}],"description":"Vitest is a Vite-native testing framework for JavaScript and TypeScript projects. From 2.1.0-beta.7 until 4.1.12 and 5.0.3, an unauthenticated non-browser WebSocket client that can reach a development server using interceptorPlugin can register a manual mock whose attacker-controlled url createManualModuleSource inserts unescaped into generated module source. When the developer browser loads the affected module, attacker-controlled JavaScript executes on the development-server origin. This issue is fixed in versions 4.1.12 and 5.0.3.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Vitest: Code injection via unauthenticated manual mock registration","id":"CVE-2026-112949","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Vitest: Windows backslash traversal bypasses the @vitest/mocker redirect allowlist fix","id":"CVE-2026-112950"},"packages":[{"ecosystem":"npm","fixed":["4.1.12"],"introduced":["2.1.0-beta.7"],"last_affected":[],"package":"@vitest/mocker","purl":null,"source":"GHSA-qxg6-89mg-rqv8"},{"ecosystem":"npm","fixed":["4.1.12"],"introduced":["2.1.0-beta.7"],"last_affected":[],"package":"@vitest/mocker","purl":"pkg:npm/%40vitest/mocker","source":"GHSA-qxg6-89mg-rqv8"},{"ecosystem":"npm","fixed":["5.0.3"],"introduced":["5.0.0-beta.1"],"last_affected":[],"package":"@vitest/mocker","purl":null,"source":"GHSA-qxg6-89mg-rqv8"},{"ecosystem":"npm","fixed":["5.0.3"],"introduced":["5.0.0-beta.1"],"last_affected":[],"package":"@vitest/mocker","purl":"pkg:npm/%40vitest/mocker","source":"GHSA-qxg6-89mg-rqv8"}],"prev":{"headline":"Vitest: Servers misapply `server.fs.deny`, serving `.env`, private keys, `.git`, and the API token file","id":"CVE-2026-112948"},"products":["mocker","vitest"],"published":"2026-10-20","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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-23","vendors":["@vitest","vitest-dev"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-112949/"}