MEDIUM 4.9 NVD
CVE-2026-109375
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 s
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.
References
- https://github.com/vercel-labs/deepsec
- https://github.com/vercel-labs/deepsec/commit/c5a4e4220ece72aee67c2ea21f4340e65f673fc1
- https://github.com/vercel-labs/deepsec/pull/46
- https://github.com/vercel-labs/deepsec/pull/47
- https://www.vulncheck.com/advisories/vercel-deepsec-before-1.1.17-arbitrary-file-write-via
This medium severity vulnerability with a CVSS score of 4.9 was published on 2026-10-12 via NVD.
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