{"cve":"CVE-2018-12541","nvd":{"published":"2018-10-10T20:29:00.380","modified":"2026-06-17T01:37:56.400","status":"Modified","description":"In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the WebSocket HTTP upgrade implementation buffers the full http request before doing the handshake, holding the entire request body in memory. There should be a reasonnable limit (8192 bytes) above which the WebSocket gets an HTTP response with the 413 status code and the connection gets closed.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-119","CWE-789"],"references":["https://access.redhat.com/errata/RHSA-2018:2946","https://bugs.eclipse.org/bugs/show_bug.cgi?id=539170","https://github.com/eclipse-vertx/vert.x/issues/2648","https://lists.apache.org/thread.html/r01123837ffbfdf5809e0a4ac354ad546e4ca8f18df89ee5a10eeb81b%40%3Cissues.bookkeeper.apache.org%3E","https://lists.apache.org/thread.html/r11789cd6d67ecca2d6f6bbb11e34495e68ee99287b6c59edf5b1a09c%40%3Ccommits.pulsar.apache.org%3E"],"products":["eclipse:vert.x"],"source":"nvd","synced_at":"2026-10-19T20:53:14.491561039+00:00"},"epss":{"cve":"CVE-2018-12541","score":0.02652,"percentile":0.85647,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-45xm-v8gq-7jqx","url":"https://osv.dev/vulnerability/GHSA-45xm-v8gq-7jqx","summary":"Excessive memory allocation","modified":"2024-03-15T05:19:58.705082Z","packages":[{"ecosystem":"Maven","name":"io.vertx:vertx-core","purl":"pkg:maven/io.vertx/vertx-core","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."]}