CVE-2026-109375

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Source

https://cve.org/CVERecord?id=CVE-2026-109375

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109375.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-109375

Published

2026-10-12T20:55:08Z

Modified

2026-10-28T02:30:51Z

Severity

4.9 (Medium) CVSS_V4 - 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 CVSS Calculator

Summary

Vercel deepsec before 1.1.17 Arbitrary File Write via Symlink in Sandbox Tarball Extraction

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.

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"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/vercel-labs/deepsec

Affected ranges

Type

GIT

Repo

https://github.com/vercel-labs/deepsec

Events

Introduced

Fixed

c5a4e4220ece72aee67c2ea21f4340e65f673fc1

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "fixed":  "c5a4e4220ece72aee67c2ea21f4340e65f673fc1"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109375.json"