CVE-2018-17297· NVD / CVE Program· CNA mitre

The unzip function in ZipUtil.java in Hutool before 4.1.12 allows remote attackers to overwrite arbitrary files via directory traversal sequ

Noroxi assessment

Priority: Monitor (action score 31/100)

Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 2.6% (FIRST EPSS); higher than 85.6% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: cn.hutool:hutool-all (Maven) 4.1.12; cn.hutool:hutool-core (Maven) 4.1.12; cn.hutool:hutool-parent (Maven) 4.1.12.

Low priority for now. Upgrade to cn.hutool:hutool-all (Maven) 4.1.12; cn.hutool:hutool-core (Maven) 4.1.12; cn.hutool:hutool-parent (Maven) 4.1.12 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.5 · v3.0—Proof of concept Fix available

GHSA-rhq2-2574-78mc

Published: Sep 21, 2018
Updated: Jun 16, 2026
EPSS: 2.6% · 85th percentile
CWE: CWE-22

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.6%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Proof of concept exists, no weaponized module
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
hutool	hutool	cpe:2.3:a:hutool:hutool

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

hutool hutoolbefore 4.1.12

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Maven	cn.hutool:hutool-all	before 4.1.12	4.1.12
Maven	cn.hutool:hutool-core	before 4.1.12	4.1.12
Maven	cn.hutool:hutool-parent	before 4.1.12	4.1.12

Same product

hutool: all records

Other highest-scoring records for the same primary product.

CVE-2023-42277hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonObject.putByPath.
39Monitor
CVE-2023-42276hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.
39Monitor
CVE-2023-24163SQL Inection vulnerability in Dromara hutool before 5.8.21 allows attacker to execute arbitrary code via the aviator template engine.
39Monitor

Published before and after this one in the same product

Later →CVE-2022-22885Feb 16, 2022 · Hutool v5.7.18's HttpRequest was discovered to ignore all TLS/SSL certificate validation.
39Monitor
Later →CVE-2022-45688Dec 13, 2022 · A stack overflow in the XML.toJSONObject component of hutool-json v5.8.10 allows attackers to cause a Denial of Service (DoS) via crafted JS
30Monitor
Later →CVE-2022-45689Dec 13, 2022 · hutool-json v5.8.10 was discovered to contain an out of memory error.
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Maven:cn.hutool:hutool-all	4.1.12	Package registry (OSV)
Maven:cn.hutool:hutool-core	4.1.12	Package registry (OSV)
Maven:cn.hutool:hutool-parent	4.1.12	Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	stars:0	2025-08-19

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedSep 21, 2018
First PoCAug 19, 2025+2524 d
TodayOct 23, 2026+2955 d

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: high · data or configuration can be modified
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:45 PM UTC

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References

github.com/looly/hutool/issues/162

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records