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Vulnerability · Published Jan 27, 2026 · Assigned by redhat

CVE-2026-1467Libsoup: libsoup: http header injection via specially crafted urls when an http proxy is configured

Medium 5.8

In plain English

A medium-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.8Medium
Exploit odds (30 days)0.4%top 68.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in libsoup, an HTTP client library. This vulnerability, known as CRLF (Carriage Return Line Feed) Injection, occurs when an HTTP proxy is configured and the library improperly handles URL-decoded input used to create the Host header. A remote attacker can exploit this by providing a specially crafted URL containing CRLF sequences, allowing them to inject additional HTTP headers or complete HTTP request bodies. This can lead to unintended or unauthorized HTTP requests being forwarded by the proxy, potentially impacting downstream services.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libsoup2.4no fix listedDEBIAN-CVE-2026-1467
Debian:13libsoup2.4no fix listedDEBIAN-CVE-2026-1467
Debian:12libsoup3no fix listedDEBIAN-CVE-2026-1467
Debian:13libsoup3no fix listedDEBIAN-CVE-2026-1467
Ubuntu:22.04:LTSlibsoup2.42.74.2-3ubuntu0.8UBUNTU-CVE-2026-1467
Ubuntu:22.04:LTSlibsoup2.42.74.2-3ubuntu0.8USN-8780-1
Ubuntu:24.04:LTSlibsoup2.42.74.3-6ubuntu1.8UBUNTU-CVE-2026-1467
Ubuntu:24.04:LTSlibsoup2.42.74.3-6ubuntu1.8USN-8780-1
Ubuntu:25.10libsoup2.4no fix listedUBUNTU-CVE-2026-1467
Ubuntu:26.10libsoup2.4no fix listedUBUNTU-CVE-2026-1467
Ubuntu:24.04:LTSlibsoup33.4.4-5ubuntu0.8USN-8780-1
Ubuntu:24.04:LTSlibsoup33.4.4-5ubuntu0.7UBUNTU-CVE-2026-1467
Ubuntu:24.04:LTSlibsoup33.4.4-5ubuntu0.7USN-8020-1
Ubuntu:25.10libsoup33.6.5-4ubuntu0.2USN-8020-1
Ubuntu:25.10libsoup33.6.5-4ubuntu0.2UBUNTU-CVE-2026-1467

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-93 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

References