CVE & CISA-KEV Catalog

CVE-2022-42916

HIGHEPSS 73th pctl
7.5
CVSS v3
NVD

Description

In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step) even when HTTP is provided in the URL. This mechanism could be bypassed if the host name in the given URL uses IDN characters that get replaced with ASCII counterparts as part of the IDN conversion, e.g., using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop of U+002E (.). The earliest affected version is 7.77.0 2021-05-26.

CWE-319

How to fix

Remediation Available
curlDebian
Fixed in:7.86.0-1CVE-2022-42916
Fixed in:7.86.0-1CVE-2022-42916
Fixed in:7.86.0-1CVE-2022-42916
curlUbuntu
Fixed in:7.58.0-2ubuntu3.21USN-5702-1
Fixed in:7.68.0-1ubuntu2.14USN-5702-1
Fixed in:7.81.0-1ubuntu1.6USN-5702-1
Fixed in:7.85.0-1ubuntu0.1USN-5702-1
libcurl3-gnutlsUbuntu
Fixed in:7.58.0-2ubuntu3.21USN-5702-1
Fixed in:7.68.0-1ubuntu2.14USN-5702-1
Fixed in:7.81.0-1ubuntu1.6USN-5702-1
Fixed in:7.85.0-1ubuntu0.1USN-5702-1
libcurl3-nssUbuntu
Fixed in:7.58.0-2ubuntu3.21USN-5702-1
Fixed in:7.68.0-1ubuntu2.14USN-5702-1
Fixed in:7.81.0-1ubuntu1.6USN-5702-1
Fixed in:7.85.0-1ubuntu0.1USN-5702-1
libcurl4Ubuntu
Fixed in:7.58.0-2ubuntu3.21USN-5702-1
Fixed in:7.68.0-1ubuntu2.14USN-5702-1
Fixed in:7.81.0-1ubuntu1.6USN-5702-1
Fixed in:7.85.0-1ubuntu0.1USN-5702-1
UniversalForwarderWindows application
Affected:9.0.0 9.0.6Fixed in:9.0.6Splunk, Inc.
Affected:8.2.0 8.2.12Fixed in:8.2.12Splunk, Inc.

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 RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

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

Exploit Intelligence

1.64%probability of exploitation in 30 days
73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory1
Other references1
Embed a live status badge for CVE-2022-42916
CVE-2022-42916 severity badge

Markdown

[![CVE-2022-42916](https://tridentstack.com/cve/badge/CVE-2022-42916.svg)](https://tridentstack.com/cve/CVE-2022-42916)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-42916"><img src="https://tridentstack.com/cve/badge/CVE-2022-42916.svg" alt="CVE-2022-42916"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2026-02-13.