CVE-2025-32907 Libsoup: denial of service in server when client requests a large amount of overlapping ranges with range header
A malicious client can cause excessive memory consumption in libsoup servers by requesting overlapping HTTP ranges, leading to partial denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-32907?
CVE-2025-32907 is a medium-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 14 Apr 2025. 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. The implementation of HTTP range requests is vulnerable to a resource consumption attack. This flaw allows a malicious client to request the same range many times in a single HTTP request, causing the server to use large amounts of memory. This does not allow for a full denial of service.
Weakness: CWE-1050
Which versions are affected by CVE-2025-32907?
Linux distribution packages (1)
libsoup openSUSE:Tumbleweed | All versions | 3.6.5-3.1 |
How do I fix CVE-2025-32907?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-32907 being exploited?
There is no known exploitation of CVE-2025-32907 in the wild and no public exploit code.
Sources
Also known as AZL-60426, AZL-60429, CLSA-2025-1751133871, DEBIAN-CVE-2025-32907, GHSA-7wfq-7p2f-6344, ROOT-OS-DEBIAN-12-CVE-2025-32907 and 2 more.