{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "c5a4e4220ece72aee67c2ea21f4340e65f673fc1"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c5a4e4220ece72aee67c2ea21f4340e65f673fc1"
            }
          ],
          "repo": "https://github.com/vercel-labs/deepsec",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-59"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109375.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "0.1.0"
              },
              {
                "fixed": "1.1.17"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "0.1.0"
              },
              {
                "fixed": "1.1.17"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "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.",
  "id": "CVE-2026-109375",
  "modified": "2026-10-28T02:30:51.135717598Z",
  "published": "2026-10-12T20:55:08.596Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109375.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109375"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/vercel-deepsec-before-1.1.17-arbitrary-file-write-via-symlink-in-sandbox-tarball-extraction"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel-labs/deepsec/commit/c5a4e4220ece72aee67c2ea21f4340e65f673fc1"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel-labs/deepsec/pull/46"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel-labs/deepsec/pull/47"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/vercel-labs/deepsec"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Vercel deepsec before 1.1.17 Arbitrary File Write via Symlink in Sandbox Tarball Extraction"
}