{"cve":"CVE-2020-27813","nvd":{"published":"2020-12-02T01:15:12.780","modified":"2026-06-17T03:09:40.230","status":"Modified","description":"An integer overflow vulnerability exists with the length of websocket frames received via a websocket connection. An attacker would use this flaw to cause a denial of service attack on an HTTP Server allowing websocket connections.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-190","CWE-400"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1902111","https://github.com/gorilla/websocket/security/advisories/GHSA-jf24-p9p9-4rjh","https://lists.debian.org/debian-lts-announce/2021/01/msg00008.html","https://lists.debian.org/debian-lts-announce/2023/05/msg00012.html","https://bugzilla.redhat.com/show_bug.cgi?id=1902111"],"products":["debian:debian_linux","gorillatoolkit:websocket"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-27813","score":0.02188,"percentile":0.82418,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-3xh2-74w9-5vxm","url":"https://osv.dev/vulnerability/GHSA-3xh2-74w9-5vxm","summary":"Integer overflow in github.com/gorilla/websocket","modified":"2023-11-08T04:03:22.368470Z","packages":[{"ecosystem":"Go","name":"github.com/gorilla/websocket","purl":"pkg:golang/github.com/gorilla/websocket","ranges":["<1.4.1"],"fixed":["1.4.1"]}]},{"id":"GO-2020-0019","url":"https://osv.dev/vulnerability/GO-2020-0019","summary":"Integer overflow in github.com/gorilla/websocket","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/gorilla/websocket","purl":"pkg:golang/github.com/gorilla/websocket","ranges":["<1.4.1"],"fixed":["1.4.1"]}]}],"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."]}