CVE-2026-109375
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability25. percentile0.3%
Product
Vercel Deepsec
PublishedOct 12, 2026
First seenOct 12, 2026
Weakness typeCWE-59Improper link resolution
How to fix
Update
- Vercel deepsec1.1.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Vercel deepsec | 0.1.0 ≤ v < 1.1.17 | 1.1.17 |
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