{"cve":"CVE-2018-12542","nvd":{"published":"2018-10-10T20:29:00.553","modified":"2026-06-17T01:37:56.650","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-22"],"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"],"products":["eclipse:vert.x"],"source":"nvd","synced_at":"2026-10-19T20:53:14.491561039+00:00"},"epss":{"cve":"CVE-2018-12542","score":0.02224,"percentile":0.82704,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-h39x-m55c-v55h","url":"https://osv.dev/vulnerability/GHSA-h39x-m55c-v55h","summary":"Eclipse Vert.x does not properly neutralize '' (forward slashes) sequences that can resolve to an external location","modified":"2023-11-08T03:59:50.042130Z","packages":[{"ecosystem":"Maven","name":"io.vertx:vertx-web","purl":"pkg:maven/io.vertx/vertx-web","ranges":[">=3.0.0 <3.5.4"],"fixed":["3.5.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}