RUSTSEC-2026-0367

Insecure Preservation of SUID/SGID Bits during ZIP Extraction Leading to Potential Privilege Escalation

Reported

October 9, 2026

Issued

October 17, 2026

Package

zip (crates.io)

Type

Vulnerability

Categories

privilege-escalation

Keywords

#privilege-escalation #suid #sgid

Aliases

GHSA-vv5m-jxxh-4627

CVSS Score

7.3 HIGH

CVSS Details

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Scope: Unchanged
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Patched

>=9.0.0

Description

The zip crate preserves privileged Unix permission bits (SUID, SGID, and sticky bits) from ZIP external_attributes during extraction, instead of masking them to safe permission bits. If a privileged process (for example, root in an installer, CI/CD pipeline, or container build) extracts an attacker-controlled ZIP archive using ZipArchive::extract() or the stream extraction API, files can be created as setuid-root or setgid. This behavior allows the creation of SUID/SGID files during extraction, which can lead to local privilege escalation depending on the execution environment.

For further details see: https://github.com/zip-rs/zip2/security/advisories/GHSA-vv5m-jxxh-4627

Advisory available under CC0-1.0 license.