CVE & CISA-KEV Catalog

CVE-2022-39348

MEDIUM
5.4
CVSS v3
NVD

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.

CWE-79Cross-Site Scripting (XSS)CWE-80

How to fix

Remediation Available
twistedDebian
Fixed in:20.3.0-7+deb11u2CVE-2022-39348
Fixed in:22.4.0-4CVE-2022-39348
Fixed in:22.4.0-4CVE-2022-39348
Fixed in:22.4.0-4CVE-2022-39348
python3-twistedUbuntu
Fixed in:18.9.0-11ubuntu0.20.04.3USN-6575-1
Fixed in:22.1.0-2ubuntu2.4USN-6575-1
Fixed in:22.4.0-4ubuntu0.23.04.1USN-6575-1
Fixed in:22.4.0-4ubuntu0.23.10.1USN-6575-1
twistedUbuntu
Fixed in:18.9.0-11ubuntu0.20.04.3USN-6575-1
Fixed in:22.1.0-2ubuntu2.4USN-6575-1
Fixed in:22.4.0-4ubuntu0.23.04.1USN-6575-1
Fixed in:22.4.0-4ubuntu0.23.10.1USN-6575-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionRequired
ScopeChanged

Impact

ConfidentialityLow
IntegrityLow
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

1.16%probability of exploitation in 30 days
63rdpercentile

Moderate risk: more likely to be exploited than 63% of all known CVEs.

References

Other references1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.