CVE-2018-12542

Name: CVE-2018-12542
Creator: NVD / NIST
Published: 2018-10-10T20:29:00.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.29%

Last modified Jun 17, 2026

CVE-2018-12542 is a vulnerability of currently unknown severity. In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the StaticHandler uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\' (forward slashes) sequences that can resolve to a location that is outside of that directory when running on Windows Operating Systems.. EPSS estimates a 2.29% chance of exploitation in the next 30 days.

Description

In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the StaticHandler uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\' (forward slashes) sequences that can resolve to a location that is outside of that directory when running on Windows Operating Systems.

Metrics

EPSS Probability

2.29%

81.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Eclipse	Vert.X	>= 3.0.0, <= 3.5.3

References

https://bugs.eclipse.org/bugs/show_bug.cgi?id=539171Issue Tracking, Vendor Advisory
https://github.com/vert-x3/vertx-web/issues/1025Exploit, Vendor Advisory
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
https://bugs.eclipse.org/bugs/show_bug.cgi?id=539171Issue Tracking, Vendor Advisory
https://github.com/vert-x3/vertx-web/issues/1025Exploit, Vendor Advisory
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E

Timeline

Published: Oct 10, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12542?

How severe is CVE-2018-12542?

Severity scoring for CVE-2018-12542 is pending analysis. The EPSS model estimates a 2.29% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12542?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12542?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST