========================================================================== Ubuntu Security Notice USN-8523-1 July 09, 2026
libsoup2.4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in libsoup.
Software Description:
- libsoup2.4: HTTP client/server library for GNOME
Details:
Eric Su and Samuel Dainard discovered that libsoup incorrectly handled
content with zero-length resources. An attacker could possibly use this
issue to trigger a buffer over-read, resulting in information disclosure
or a denial of service. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and
Ubuntu 26.04 LTS. (CVE-2026-2369)
Kona Arctic discovered that libsoup did not properly protect sensitive
cookies when establishing HTTPS tunnels through an HTTP proxy. An
attacker could possibly use this issue to intercept session cookies,
resulting in session hijacking or user impersonation. (CVE-2026-5119)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
libsoup-2.4-1 2.74.3-10.1ubuntu5+esm1
Available with Ubuntu Pro
libsoup-gnome-2.4-1 2.74.3-10.1ubuntu5+esm1
Available with Ubuntu Pro
libsoup2.4-common 2.74.3-10.1ubuntu5+esm1
Available with Ubuntu Pro
libsoup2.4-dev 2.74.3-10.1ubuntu5+esm1
Available with Ubuntu Pro
libsoup2.4-tests 2.74.3-10.1ubuntu5+esm1
Available with Ubuntu Pro
Ubuntu 25.10
libsoup-2.4-1 2.74.3-10.1ubuntu4.1
libsoup-gnome-2.4-1 2.74.3-10.1ubuntu4.1
libsoup2.4-common 2.74.3-10.1ubuntu4.1
libsoup2.4-dev 2.74.3-10.1ubuntu4.1
libsoup2.4-tests 2.74.3-10.1ubuntu4.1
Ubuntu 24.04 LTS
libsoup-2.4-1 2.74.3-6ubuntu1.7
libsoup-gnome-2.4-1 2.74.3-6ubuntu1.7
libsoup2.4-common 2.74.3-6ubuntu1.7
libsoup2.4-dev 2.74.3-6ubuntu1.7
libsoup2.4-tests 2.74.3-6ubuntu1.7
Ubuntu 22.04 LTS
libsoup-gnome2.4-1 2.74.2-3ubuntu0.7
libsoup2.4-1 2.74.2-3ubuntu0.7
libsoup2.4-common 2.74.2-3ubuntu0.7
libsoup2.4-dev 2.74.2-3ubuntu0.7
libsoup2.4-tests 2.74.2-3ubuntu0.7
Ubuntu 20.04 LTS
libsoup-gnome2.4-1 2.70.0-1ubuntu0.5+esm2
Available with Ubuntu Pro
libsoup2.4-1 2.70.0-1ubuntu0.5+esm2
Available with Ubuntu Pro
libsoup2.4-dev 2.70.0-1ubuntu0.5+esm2
Available with Ubuntu Pro
libsoup2.4-tests 2.70.0-1ubuntu0.5+esm2
Available with Ubuntu Pro
Ubuntu 18.04 LTS
libsoup-gnome2.4-1 2.62.1-1ubuntu0.4+esm7
Available with Ubuntu Pro
libsoup2.4-1 2.62.1-1ubuntu0.4+esm7
Available with Ubuntu Pro
libsoup2.4-dev 2.62.1-1ubuntu0.4+esm7
Available with Ubuntu Pro
Ubuntu 16.04 LTS
libsoup-gnome2.4-1 2.52.2-1ubuntu0.3+esm6
Available with Ubuntu Pro
libsoup2.4-1 2.52.2-1ubuntu0.3+esm6
Available with Ubuntu Pro
libsoup2.4-dev 2.52.2-1ubuntu0.3+esm6
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8523-1
CVE-2026-2369, CVE-2026-5119
Package Information:
https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.3-10.1ubuntu4.1
https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.3-6ubuntu1.7
https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.2-3ubuntu0.7
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