CVE-2026-1467 Libsoup: libsoup: http header injection via specially crafted urls when an http proxy is configured
Attackers can inject HTTP headers via crafted URLs when a proxy is configured, potentially manipulating requests to downstream services.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-1467?
CVE-2026-1467 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 27 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-93
Which versions are affected by CVE-2026-1467?
It affects 2 products.
Products include Gnome Libsoup, Redhat Enterprise Linux.
How do I fix CVE-2026-1467?
Apply the vendor's patch.
Is CVE-2026-1467 being exploited?
There is no known exploitation of CVE-2026-1467 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2026-102556 Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
- CVE-2026-102557 Libsoup: libsoup: heap buffer overflow during websocket message reassembly
- CVE-2026-102558 Libsoup: libsoup: heap buffer overflow during websocket receive-buffer growth
- CVE-2026-102559 Libsoup: libsoup: heap buffer overflow during websocket client-frame masking
- CVE-2026-102560 Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth
Sources
Also known as AZL-76373, AZL-76398, DEBIAN-CVE-2026-1467, ECHO-c993-31db-a8bf, GHSA-8pm5-xr39-vfv3, UBUNTU-CVE-2026-1467.