CVE-2026-1760 Libsoup: soupserver: denial of service via http request smuggling
Remote attackers can cause denial of service in applications using Libsoup by exploiting HTTP request smuggling via crafted chunked requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-1760?
CVE-2026-1760 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 2 Feb 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 SoupServer. This HTTP request smuggling vulnerability occurs because SoupServer improperly handles requests that combine Transfer-Encoding: chunked and Connection: keep-alive headers. A remote, unauthenticated client can exploit this by sending specially crafted requests, causing SoupServer to fail to close the connection as required by RFC 9112. This allows the attacker to smuggle additional requests over the persistent connection, leading to unintended request processing and potential denial-of-service (DoS) conditions.
Weakness: CWE-444
Which versions are affected by CVE-2026-1760?
How do I fix CVE-2026-1760?
Upgrade to a fixed version.
Is CVE-2026-1760 being exploited?
There is no known exploitation of CVE-2026-1760 in the wild and no public exploit code.
Sources
Also known as AZL-77618, AZL-77622, DEBIAN-CVE-2026-1760, ECHO-0d17-9796-549f, GHSA-58g3-53qw-g6m8, UBUNTU-CVE-2026-1760.