CRLF Injection Vulnerability in libsoup HTTP Client Library
CVE-2026-1467

6.1MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
27 January 2026

What is CVE-2026-1467?

A flaw exists in the libsoup HTTP client library that enables a remote attacker to exploit the system through CRLF Injection. When an HTTP proxy is configured, improper handling of URL-decoded input related to the Host header creates an opportunity for attackers. By sending crafted URLs featuring CRLF sequences, malicious entities can manipulate HTTP headers or entirely create HTTP request bodies. This manipulation can result in unauthorized HTTP requests being transmitted by the proxy, adversely affecting downstream services.

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References

https://access.redhat.com/security/cve/CVE-2026-1467
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2433174
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Codean Labs for reporting this issue.
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