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[USN-8337-1] QtSvg vulnerabilities

Posted on 28 May 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8337-1
May 28, 2026

qtsvg-opensource-src vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in QtSvg.

Software Description:
- qtsvg-opensource-src: Qt 5 SVG module

Details:

It was discovered that QtSvg incorrectly handled certain SVG images. An
attacker could possibly use this issue to cause QtSvg to crash, resulting in
a denial of service. This issue only affected Ubuntu 16.04 LTS.
(CVE-2018-19869)

It was discovered that QtSvg incorrectly handled certain SVG images. An
attacker could use this issue to cause QtSvg to crash, resulting in a
denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 16.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-3481,
CVE-2021-28025, CVE-2021-45930)

It was discovered that QtSvg incorrectly handled certain SVG images. An
attacker could use this issue to cause QtSvg to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2023-32573)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
libqt5svg5 5.15.3-1ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 20.04 LTS
libqt5svg5 5.12.8-0ubuntu1+esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libqt5svg5 5.9.5-0ubuntu1.1+esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libqt5svg5 5.5.1-2ubuntu0.1~esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8337-1
CVE-2018-19869, CVE-2021-28025, CVE-2021-3481, CVE-2021-45930,
CVE-2023-32573

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