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.
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CVE-2026-5119
- CVSS 3.1
- 8.2 high
- EPSS
- <1%p18
- Published
- ·
- Modified
Description · NVD
A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.
- Products
- libsoup, enterprise linux
- Weakness
- CWE-319
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
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.
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