Reported

October 9, 2026

Issued

October 17, 2026

Package

zip (crates.io)

Type

Vulnerability

Categories

• privilege-escalation

Keywords

#privilege-escalation #symlink

Aliases

• GHSA-4v9h-p7m9-rh26

Patched

• >=9.0.0

Description

In zip 9.0.0-pre2, ZipArchive::extract creates a symbolic link from an archive entry after validating only the output entry path. The link target bytes are passed directly to the platform symlink API, so a malicious archive can create an entry inside the destination that resolves to an attacker-chosen path outside it. This behavior was verified on macOS and Linux. On either platform, a subsequent application read or write through that extracted entry accesses the external target with the extracting process's permissions.

For further details see: https://github.com/zip-rs/zip2/security/advisories/GHSA-4v9h-p7m9-rh26

Advisory available under CC0-1.0 license.