How severe is CVE-2018-1047?

CVE-2018-1047 has a CVSS score of 5.5/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2018-1047?

CVE-2018-1047 affects the following packages: org.wildfly:wildfly-undertow (Maven). Ecosystems affected: Maven.

How do I fix CVE-2018-1047?

Update org.wildfly:wildfly-undertow to 12.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1047 is resolved across your whole dependency graph.

How do I detect CVE-2018-1047 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.wildfly:wildfly-undertow, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2018-1047 if there is no patch (or I can't update yet)?

Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Is CVE-2018-1047 actively exploited in the wild?

No public exploit code has been indexed for CVE-2018-1047 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2018-1047?

CVE-2018-1047 has an EPSS (Exploit Prediction Scoring System) score of 0.5%, placing it in the 44th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2018-1047?

CVE-2018-1047 is classified as Improper Input Validation (CWE-20), Path Traversal (CWE-22). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2018-1047 published, and has it been updated?

CVE-2018-1047 was published on January 24, 2018 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2018-1047 — wildfly-undertow

MEDIUM

CVE-2018-1047 is a medium-severity (CVSS 5.5) Improper Input Validation vulnerability in org.wildfly:wildfly-undertow. A fix is available for org.wildfly:wildfly-undertow — see the affected versions and patch details below.

Improper Input Validation in org.wildfly:wildfly-undertow

Also known asGHSA-fmr4-w67p-vh8x

Published

Jan 24, 2018

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.wildfly:wildfly-undertow

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

A flaw was found in Wildfly 9.x. A path traversal vulnerability through the org.wildfly.extension.undertow.deployment.ServletResourceManager.getResource method could lead to information disclosure of arbitrary local files.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.wildfly:wildfly-undertow`	all versions	12.0.0`org.wildfly:wildfly-undertow:12.0.0`

Affected Products

2 products · 29 configurations

Application

jboss enterprise application platformredhat

1 version

7.1.0

Application

jboss wildfly application serverredhat

6 versions

9.0.09.0.19.0.210.0.010.1.011.0.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.wildfly:wildfly-undertow, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.wildfly:wildfly-undertow to 12.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1047 is resolved across your whole dependency graph.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

Product	Fixed in	Advisory
Red Hat JBoss EAP 7.1	see advisory	RHSA-2018:1251
Red Hat JBoss Enterprise Application Platform 7.1 for RHEL 6	`eap7-activemq-artemis-0:1.5.5.010-1.redhat_1.1.ep7.el6`	RHSA-2018:1248
Red Hat JBoss Enterprise Application Platform 7.1 for RHEL 6	`eap7-jboss-ec2-eap-0:7.1.2-1.GA_redhat_1.ep7.el6`	RHSA-2018:1249
Red Hat JBoss Enterprise Application Platform 7.1 for RHEL 7	`eap7-activemq-artemis-0:1.5.5.010-1.redhat_1.1.ep7.el7`	RHSA-2018:1247
Text-Only RHOAR	see advisory	RHSA-2018:2938

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2018-1047 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

5.5/10CVSS v3 base

Vector breakdown

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Raw vector

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

CWE Classification

CWE-20Improper Input Validation CWE-22Path Traversal

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Jan 24, 2018

Last updated

Oct 24, 2026

Identifiers

CVE-2018-1047

GHSA-fmr4-w67p-vh8x

References

Advisoryaccess.redhat.com · RHSA 2018:1247 Advisoryaccess.redhat.com · RHSA 2018:1248 Advisoryaccess.redhat.com · RHSA 2018:1249 Advisoryaccess.redhat.com · RHSA 2018:1251 Advisoryaccess.redhat.com · RHSA 2018:2938 Advisorynvd.nist.gov · CVE 2018 1047 Advisorygithub.com · GHSA fmr4 w67p vh8x Reportbugzilla.redhat.com · show bug.cgi Reportissues.jboss.org · WFLY 9620 Webaccess.redhat.com · CVE 2018 1047

Related vulnerabilities

Also affects wildfly-undertow

This CVE is medium severity; 3 of 3 other CVEs affecting wildfly-undertow are rated as high or higher (top: high).

CVE-2016-4993CVE-2016-0793CVE-2016-9589

Same weakness: CWE-20

This CVE is medium severity; 4 of 5 other CVEs with CWE-20 are rated as high or higher (top: critical).

GHSA-fmc8-p6q7-75ccGHSA-pjff-c2wc-f6jmCVE-2026-44265CVE-2026-119280CVE-2026-96631Browse all CWE-20

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2018-1047 — wildfly-undertow

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Fixing This On Your OS

Frequently Asked Questions

Is CVE-2018-1047 in your dependencies?