CVE-2026-4271
Medium
Description
A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).
SeverityMedium
CVSS5.3
Exploit probability—
Product
Gnome Libsoup
PublishedMar 17, 2026
First seenMar 17, 2026
Weakness typeCWE-416Use after free
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnome libsoup | No range specified | — |
| redhat enterprise_linux | 6.0, 7.0, 8.0, 9.0, 10.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.