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High, CVSS 7.3

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

GHSA-vv5m-jxxh-4627

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (zip 9.0.0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • crates.io zip

    Affected
    >= 0.0.0-0, < 9.0.0
    Fixed in
    9.0.0

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
7.3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

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

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from osv record RUSTSEC-2026-0367

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-vv5m-jxxh-4627

Advisory: Insecure Preservation of SUID/SGID Bits during ZIP Extraction Leading to Potential Privilege Escalation
IDs: GHSA-vv5m-jxxh-4627
Record: https://patchnext.com/advisories/rustsec-2026-0367 (revision 1, source checked 23 Oct 2026, 22:04 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: zip 9.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- crates.io zip: affected >= 0.0.0-0, < 9.0.0; fixed in 9.0.0

## Suggested inspection (read-only)
- crates.io zip: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on zip.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/RUSTSEC-2026-0367 (OSV record RUSTSEC-2026-0367 lists affected ranges: crates.io zip >=0.0.0-0 <9.0.0 (fixed))

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