What’s Vulnerable › Vulnerabilities

CVE-2018-12542

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-10-10 · updated 2026-06-17
• Weakness: CWE-22

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.

Affected products

• Eclipse Foundation Eclipse Vert.x: from 3.0.0 through 3.5.3

References

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

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