{"id":"CVE-2026-109375","title":"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","summary":"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 co…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N","cwe":["CWE-59"],"vendor":"Vercel","product":"deepsec","affected":["deepsec >= 0.1.0 < 1.1.17"],"published":"2026-10-12","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:18:44.867","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109375","references":[{"url":"https://github.com/vercel-labs/deepsec","label":"disclosure@vulncheck.com"},{"url":"https://github.com/vercel-labs/deepsec/commit/c5a4e4220ece72aee67c2ea21f4340e65f673fc1","label":"disclosure@vulncheck.com"},{"url":"https://github.com/vercel-labs/deepsec/pull/46","label":"disclosure@vulncheck.com"},{"url":"https://github.com/vercel-labs/deepsec/pull/47","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/vercel-deepsec-before-1.1.17-arbitrary-file-write-via-symlink-in-sandbox-tarball-extraction","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"epss":0.00322,"epssPercentile":0.25103,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T15:44:46.422330Z"},"ingestedAt":"2026-10-12T22:05:40.354Z","slug":"CVE-2026-109375","body":"## Overview\n\nVercel 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}