Cross-site Scripting (XSS) Affecting twisted package, versions <22.4.0-4


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.27% (69th percentile)

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  • Snyk IDSNYK-ECHOLATEST-TWISTED-20557282
  • published7 Oct 2026
  • disclosed26 Oct 2022

Introduced: 26 Oct 2022

CVE-2022-39348  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Echo:latest twisted to version 22.4.0-4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream twisted package and not the twisted package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

Twisted is an event-based framework for internet applications. Started with version 0.9.4, 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. In practice this should be very difficult to exploit as being able to modify the Host header of a normal HTTP request implies that one is already in a privileged position. This issue was fixed in version 22.10.0rc1. There are no known workarounds.

CVSS Base Scores

version 3.1