USN-8890-2: libsoup vulnerabilities
Publication date
21 October 2026
Overview
Several security issues were fixed in libsoup.
Releases
Packages
- libsoup3 - HTTP client/server library for GNOME
Details
USN-8890-1 fixed vulnerabilities in libsoup. This update provides the
corresponding updates for libsoup3 on Ubuntu 26.10.
Original advisory details:
It was discovered that libsoup incorrectly handled certain HTTP/2
requests.
A remote attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS.
(CVE-2026-4271)
It was discovered that libsoup incorrectly handled certain HTTPS proxy
connections. A remote attacker could possibly use this issue to obtain
sensitive information. This issue only affected Ubuntu 22.04 LTS, Ubuntu
24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-5119)
It was discovered that libsoup incorrectly parsed certain chunked HTTP
requests. A remote attacker could possibly use this issue to bypass
security controls. This issue only affected Ubuntu...
USN-8890-1 fixed vulnerabilities in libsoup. This update provides the
corresponding updates for libsoup3 on Ubuntu 26.10.
Original advisory details:
It was discovered that libsoup incorrectly handled certain HTTP/2
requests.
A remote attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS.
(CVE-2026-4271)
It was discovered that libsoup incorrectly handled certain HTTPS proxy
connections. A remote attacker could possibly use this issue to obtain
sensitive information. This issue only affected Ubuntu 22.04 LTS, Ubuntu
24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-5119)
It was discovered that libsoup incorrectly parsed certain chunked HTTP
requests. A remote attacker could possibly use this issue to bypass
security controls. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04
LTS, and Ubuntu 26.04 LTS. (CVE-2026-6324)
It was discovered that libsoup incorrectly handled proxy authentication
credentials. A remote attacker could possibly use this issue to obtain
sensitive information. (CVE-2026-66339)
It was discovered that libsoup incorrectly handled certain HTTP Range
headers. A remote attacker could possibly use this issue to cause a denial
of service. (CVE-2026-77014, CVE-2026-77680)
It was discovered that libsoup incorrectly handled certain HTTP/2
connections. A remote attacker could possibly use this issue to obtain
sensitive information or execute arbitrary code. This issue only affected
Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-85197)
It was discovered that libsoup incorrectly handled certain HTTP/2
transfers. A remote attacker could possibly use this issue to cause a
denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04
LTS, and Ubuntu 26.04 LTS. (CVE-2026-85534)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.10 stonking | gir1.2-soup-3.0 – 3.6.6-1ubuntu3 | ||
| libsoup-3.0-0 – 3.6.6-1ubuntu3 | |||
| libsoup-3.0-common – 3.6.6-1ubuntu3 | |||
| libsoup-3.0-dev – 3.6.6-1ubuntu3 | |||
| libsoup-3.0-doc – 3.6.6-1ubuntu3 | |||
| libsoup-3.0-tests – 3.6.6-1ubuntu3 | |||
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