{"id":"CVE-2026-109375","revision":"4f90375d937e4b10962e8d2c14e33b12","records":[{"revision":"4f90375d937e4b10962e8d2c14e33b12","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109375","aliases":[],"title":"Vercel deepsec before 1.1.17 Arbitrary File Write via Symlink in Sandbox Tarball Extraction","description":"Vercel deepsec from 0.1.0 before 1.1.17 contains a link following vulnerability in extractTarballLocally that allows sandboxed code to write files outside the sandbox by planting links in result tarballs. Attackers controlling sandbox code, such as a prompt-injected coding agent, can plant symbolic or hard links in the host data directory to write arbitrary files on the orchestrator host.","state":0,"publishedAt":"2026-10-12T20:55:08.596+00:00","modifiedAt":"2026-10-13T15:45:01.735+00:00","affected":[{"ecosystem":"Vendor product","name":"deepsec","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Vercel\",\n                    \"product\": \"deepsec\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0.1.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"1.1.17\"\n                        },\n                        {\n                            \"version\": \"1.1.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:npm/deepsec\",\n                    \"repo\": \"https://github.com/vercel-labs/deepsec\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N","score":4.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/vercel-labs/deepsec/pull/46","https://github.com/vercel-labs/deepsec/pull/47","https://github.com/vercel-labs/deepsec/commit/c5a4e4220ece72aee67c2ea21f4340e65f673fc1","https://github.com/vercel-labs/deepsec","https://www.vulncheck.com/advisories/vercel-deepsec-before-1.1.17-arbitrary-file-write-via-symlink-in-sandbox-tarball-extraction"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109375","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109375","identifiers":["CVE-2026-109375"]},"retained":false,"historicalAffected":[]}],"coverage":[]}