CVE-2018-12542

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.98% Top 25%
Vendor Advisory eclipse.org Vendor Advisory github.com
Affected: The Eclipse Foundation Eclipse Vert.x
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E mailing list
https://github.com/vert-x3/vertx-web/issues/1025 vendor advisory exploit
https://bugs.eclipse.org/bugs/show_bug.cgi?id=539171 vendor advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2018-12542?
CVE-2018-12542 has been scored as a critical severity vulnerability.
How to fix CVE-2018-12542?
To fix CVE-2018-12542, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12542 being actively exploited in the wild?
It is possible that CVE-2018-12542 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-12542?
CVE-2018-12542 affects The Eclipse Foundation Eclipse Vert.x.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.