CVE-2022-39348

Aliases:GHSA-vg46-2rrj-3647
Advisory lineage Upstream: 0 Downstream: 10
Modified
Published: 26 Oct 2022, 00:00
Last modified:03 Nov 2025, 21:46

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.4 MEDIUM
v3.1 (cve.org)
EPSS Score
1.2% LOW
1% probability +0.02%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

26 Oct 2022, 00:00
Published
Vulnerability first disclosed
03 Nov 2025, 21:46
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v4.0•MEDIUM•Score: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
  • v3.1•MEDIUM•Score: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Trends

Current EPSS score: 1.20%• Percentile: 79%

Techniques & Countermeasures

  • CWE-79•Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

    The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

  • CWE-80•Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

    The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

Affected Systems

  • debian•debian_linux

    10.0

  • PyPI•twisted

    ≥ 0.9.4, < 22.10.0rc1

  • twisted•twisted

    ≥ 0.9.4, < 22.10.0rc1 | ≥ 0.9.4, < 22.10.0

References (8)