CVE-2026-115908
zip: Arbitrary file write outside the extraction directory, because ZipArchive::extract validates symlink targets lexically. (The defense against CVE-2025-29787 was broken in v7.2.0)
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.
- Affected
- zip-rs · zip2
- CVSS v3.1 GITHUB
- 7.4 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H - EPSS
- 0.43% chance of exploitation in the next 30 days, 38th percentile
- Published
- 2026-10-26
Proof-of-concept exploits (1)
CVE references
- zip-rs/zip2/commit/09c030eab56e8db8fb3c1c33f554407b30bad8faREFERENCE
- zip-rs/zip2/releases/tag/v9.0.0REFERENCE
- zip-rs/zip2/security/advisories/GHSA-hjqx-j4rw-g7xvREFERENCE