zip: Arbitrary file write outside the extraction directory, because ZipArchive::extract validates symlink targets lexically.

[ Description ]Official description

zip is a zip library for Rust that supports reading and writing simple ZIP files. From 7.2.0 until 9.0.0, ZipArchive::extract and ZipArchive::extract_unwrapped_root_dir use safe_prepare_path in src/read/zipfile.rs and simplified_components in src/path.rs to validate symbolic link targets with a lexical prefix comparison rather than resolving each intermediate link. An attacker who knows or can guess the absolute extraction destination can create a chain whose apparent target remains under the destination while an intermediate symlink resolves outside it, allowing attacker-controlled files to be created or overwritten with the extracting process's privileges. On Windows, discarded drive and UNC prefixes can permit a single-link escape when the process has SeCreateSymbolicLinkPrivilege, such as through administrator rights or Developer Mode. This regression is distinct from CVE-2025-29787. This issue is fixed in version 9.0.0.

[ Fixes ]Fixes and patches

• zip 9.0.0Fixed version · GitHub Advisories · rust package zip: upgrade to 9.0.0 or later (affected >= 7.2.0, < 9.0.0)

[ Packages ]Affected open-source packages

• zip rustAffected >= 7.2.0, < 9.0.0 · fixed in 9.0.0 · GHSA-hjqx-j4rw-g7xv

[ References ]References

• github.com/zip-rs/zip2/commit/09c030eab56e8db8fb3c1c33f554407b30bad8fa
• github.com/zip-rs/zip2/releases/tag/v9.0.0
• github.com/zip-rs/zip2/security/advisories/GHSA-hjqx-j4rw-g7xv