{"id":"GHSA-866w-xmhq-wj7x","title":"SvelteKit: Prototype pollution in file input deletion path in remote-function forms","summary":"SvelteKit: Prototype pollution in file input deletion path in remote-function forms","severity":"medium","cvss":4.3,"cwe":["CWE-1321"],"vendor":"sveltejs","product":"@sveltejs/kit","ecosystem":"npm","affected":["@sveltejs/kit <= 2.69.0"],"patched":["@sveltejs/kit 2.69.1"],"published":"2026-07-24","updated":"2026-07-24","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-866w-xmhq-wj7x","references":[{"url":"https://github.com/sveltejs/kit/security/advisories/GHSA-866w-xmhq-wj7x"},{"url":"https://github.com/sveltejs/kit/pull/16218"},{"url":"https://github.com/sveltejs/kit/commit/df32f6fe86cdd0b68b650e3e4631e5896453dcd3"},{"url":"https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.69.1"},{"url":"https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.0.0-next.7"},{"url":"https://github.com/advisories/GHSA-866w-xmhq-wj7x"}],"tags":["ghsa","npm"],"ingestedAt":"2026-07-24T16:33:09.754Z","slug":"GHSA-866w-xmhq-wj7x","body":"## Overview\n\nIf you use remote form functions, have an input field of type `file`, and accept arbitrary user-controlled path names for the field, then you are vulnerable to a prototype pollution attack where the attacker can remove e.g. methods on the prototype.\n\n## Affected packages\n\n- `@sveltejs/kit <= 2.69.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `@sveltejs/kit 2.69.1`","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}