Unzip function in ZipUtil.java in Hutool allows remote attackers to overwrite arbitrary files via directory traversal

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.5 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

• CVE-2018-17297: 2.67% estimated exploitation activity in the next 30 days; percentile 85.80 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

The unzip function in ZipUtil.java in Hutool before 4.1.12 allows remote attackers to overwrite arbitrary files via directory traversal sequences in a filename within a ZIP archive.

Published by the source

17 Oct 2018, 19:54 UTC

Last modified by the source

9 Jan 2023, 05:03 UTC

Source last checked

26 Oct 2026, 15:52 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-rhq2-2574-78mc

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

# Patch Next advisory brief: CVE-2018-17297

Advisory: Unzip function in ZipUtil.java in Hutool allows remote attackers to overwrite arbitrary files via directory traversal
IDs: CVE-2018-17297, GHSA-rhq2-2574-78mc
Record: https://patchnext.com/advisories/cve-2018-17297 (revision 1, source checked 26 Oct 2026, 15:52 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: cn.hutool:hutool-all 4.1.12; cn.hutool:hutool-core 4.1.12; cn.hutool:hutool-parent 4.1.12. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven cn.hutool:hutool-all: affected < 4.1.12; fixed in 4.1.12
- Maven cn.hutool:hutool-core: affected < 4.1.12; fixed in 4.1.12
- Maven cn.hutool:hutool-parent: affected < 4.1.12; fixed in 4.1.12

## Suggested inspection (read-only)
- Maven cn.hutool:hutool-all: check the installed version with your package manager.
- Maven cn.hutool:hutool-core: check the installed version with your package manager.
- Maven cn.hutool:hutool-parent: 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 cn.hutool:hutool-all, cn.hutool:hutool-core, cn.hutool:hutool-parent.
- 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://github.com/advisories/GHSA-rhq2-2574-78mc (GitHub-reviewed advisory GHSA-rhq2-2574-78mc lists affected ranges: Maven cn.hutool:hutool-parent >=0 =0 =0 <4.1.12)

Commands are suggestions: review each one before running it.