{"answers":{"affected":"2 open source packages ship an affected version, including @sveltejs/adapter-vercel.","exploited":"There is no known exploitation of CVE-2026-27118 in the wild and no public exploit code.","fix":"Upgrade @sveltejs/adapter-vercel to 6.3.2 or later.","what":"CVE-2026-27118 is a medium-severity vulnerability in sveltejs kit, published on 20 Feb 2026."},"fix_prompt":"Check this codebase for CVE-2026-27118 and fix it if it is affected.\n\nWhat it is: CVE-2026-27118 is a medium-severity vulnerability in sveltejs kit, published on 20 Feb 2026. \nExploitation: There is no known exploitation of CVE-2026-27118 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @sveltejs/adapter-vercel (npm): affected all versions; fixed in 6.3.2\n- @sveltejs/adapter-vercel (npm): affected all versions; fixed in 6.3.2\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-2026-27118/ (Markdown: https://insights.sbomify.com/CVE-2026-27118/index.md)","id":"CVE-2026-27118","markdown":"https://insights.sbomify.com/CVE-2026-27118/index.md","name":"CVE-2026-27118","record":{"aliases":["GHSA-9pq4-5hcf-288c"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-346","name":"Origin Validation Error"}],"description":"SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Versions of @sveltejs/adapter-vercel prior to 6.3.2 are vulnerable to cache poisoning. An internal query parameter intended for Incremental Static Regeneration (ISR) is accessible on all routes, allowing an attacker to cause sensitive user-specific responses to be cached and served to other users. Successful exploitation requires a victim to visit an attacker-controlled link while authenticated. Existing deployments are protected by Vercel's WAF, but users should upgrade as soon as possible. This vulnerability is fixed in 6.3.2.","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":"Cache poisoning in @sveltejs/adapter-vercel","id":"CVE-2026-27118","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Svelte affected by XSS in SSR `\u003coption\u003e` element","id":"CVE-2026-27119"},"packages":[{"ecosystem":"npm","fixed":["6.3.2"],"introduced":["0"],"last_affected":[],"package":"@sveltejs/adapter-vercel","purl":null,"source":"GHSA-9pq4-5hcf-288c"},{"ecosystem":"npm","fixed":["6.3.2"],"introduced":["0"],"last_affected":[],"package":"@sveltejs/adapter-vercel","purl":"pkg:npm/%40sveltejs/adapter-vercel","source":"GHSA-9pq4-5hcf-288c"}],"prev":{"headline":"bit7z has a path traversal vulnerability","id":"CVE-2026-27117"},"products":["kit"],"published":"2026-02-20","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-24","vendors":["sveltejs"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-27118/"}