Ubuntu patches libsoup3 flaws on 26.10 in USN-8890-2
The notice backports earlier libsoup fixes, including an HTTP/2 denial of service and an HTTPS proxy information leak.
42
CVE-2026-4271
- CVSS 3.1
- 7.5 high
- EPSS
- <1%p59
- Published
- ·
- Modified
Description · NVD
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).
- Products
- libsoup, enterprise linux
- Weakness
- CWE-416
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
In the news
2 storiesUSN-8890-1: libsoup vulnerabilities
Ubuntu fixed libsoup flaws that could cause denial of service, leak proxy data, or bypass security checks.
36