{"schema_version":"1.9.0","id":"GHSA-vg46-2rrj-3647","published":"2022-10-26T22:08:39Z","modified":"2026-07-07T11:56:35.965842685Z","aliases":["CVE-2022-39348","PYSEC-2026-1055"],"summary":"Twisted vulnerable to NameVirtualHost Host header injection","details":"When the host header does not match a configured host, `twisted.web.vhost.NameVirtualHost` will return a `NoResource` resource which renders the Host header unescaped into the 404 response allowing HTML and script injection.\n\nExample configuration:\n```python\nfrom twisted.web.server import Site\nfrom twisted.web.vhost import NameVirtualHost\nfrom twisted.internet import reactor\n\nresource = NameVirtualHost()\nsite = Site(resource)\nreactor.listenTCP(8080, site)\nreactor.run()\n```\nOutput:\n```\n❯ curl -H\"Host:
HELLO THERE
\" http://localhost:8080/\n\n\n 404 - No Such Resource\n \n
No Such Resource
\n
host b'
hello there
' not in vhost map\n \n\n```\n\nThis vulnerability was introduced in f49041bb67792506d85aeda9cf6157e92f8048f4 and first appeared in the 0.9.4 release.","affected":[{"package":{"name":"twisted","ecosystem":"PyPI","purl":"pkg:pypi/twisted"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.9.4"},{"fixed":"22.10.0rc1"}]}],"versions":["1.0.1","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.1.0","1.1.1","1.2.0","10.0.0","10.1.0","10.2.0","11.0.0","11.1.0","12.0.0","12.1.0","12.2.0","12.3.0","13.0.0","13.1.0","13.2.0","14.0.0","14.0.1","14.0.2","15.0.0","15.1.0","15.2.0","15.2.1","15.3.0","15.4.0","15.5.0","16.0.0","16.1.0","16.1.1","16.2.0","16.3.0","16.3.1","16.3.2","16.4.0","16.4.1","16.5.0","16.5.0rc1","16.5.0rc2","16.6.0","16.6.0rc1","16.7.0rc1","16.7.0rc2","17.1.0","17.1.0rc1","17.5.0","17.9.0","17.9.0rc1","18.4.0","18.4.0rc1","18.7.0","18.7.0rc1","18.7.0rc2","18.9.0","18.9.0rc1","19.10.0","19.10.0rc1","19.2.0","19.2.0rc1","19.2.0rc2","19.2.1","19.7.0","19.7.0rc1","2.1.0","2.4.0","2.5.0","20.3.0","20.3.0rc1","21.2.0","21.2.0rc1","21.7.0","21.7.0rc1","21.7.0rc2","21.7.0rc3","22.1.0","22.1.0rc1","22.2.0","22.2.0rc1","22.4.0","22.4.0rc1","22.8.0","22.8.0rc1","8.0.0","8.0.1","8.1.0","8.2.0","9.0.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/10/GHSA-vg46-2rrj-3647/GHSA-vg46-2rrj-3647.json"}}],"references":[{"type":"WEB","url":"https://github.com/twisted/twisted/security/advisories/GHSA-vg46-2rrj-3647"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-39348"},{"type":"WEB","url":"https://github.com/twisted/twisted/commit/f2f5e81c03f14e253e85fe457e646130780db40b"},{"type":"WEB","url":"https://github.com/twisted/twisted/commit/f49041bb67792506d85aeda9cf6157e92f8048f4"},{"type":"PACKAGE","url":"https://github.com/twisted/twisted"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00038.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00028.html"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202301-02"}],"database_specific":{"cwe_ids":["CWE-79","CWE-80"],"github_reviewed":true,"github_reviewed_at":"2022-10-26T22:08:39Z","nvd_published_at":"2022-10-26T20:15:00Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}]}