{"cve":"CVE-2021-36221","nvd":{"published":"2021-08-08T06:15:08.740","modified":"2026-06-17T03:58:32.710","status":"Modified","description":"Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic upon an ErrAbortHandler abort.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9},"cwes":["CWE-362"],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf","https://groups.google.com/forum/#%21forum/golang-announce","https://groups.google.com/g/golang-announce/c/JvWG9FUUYT0","https://groups.google.com/g/golang-announce/c/uHACNfXAZqk","https://lists.debian.org/debian-lts-announce/2022/01/msg00016.html"],"products":["debian:debian_linux","fedoraproject:fedora","golang:go","oracle:timesten_in-memory_database","siemens:scalance_lpe9403_firmware"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-36221","score":0.03114,"percentile":0.8781,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GO-2021-0245","url":"https://osv.dev/vulnerability/GO-2021-0245","summary":"Panic in ReverseProxy in net/http/httputil","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"stdlib","purl":"pkg:golang/stdlib","ranges":["<1.15.15",">=1.16.0-0 <1.16.7"],"fixed":["1.15.15","1.16.7"]}]}],"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."]}