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[USN-8409-1] uriparser vulnerability

Posted on 10 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8409-1
June 09, 2026

uriparser vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

uriparser could be made to crash if it received specially crafted
input.

Software Description:
- uriparser: Strictly RFC 3986 compliant URI parsing library

Details:

It was discovered that uriparser incorrectly handled certain URI strings.
An attacker could possibly use this issue to cause uriparser to crash,
resulting in a denial of service.

Update instructions:

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

Ubuntu 24.04 LTS
liburiparser1 0.9.7+dfsg-2ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 22.04 LTS
liburiparser1 0.9.6+dfsg-1ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 20.04 LTS
liburiparser1 0.9.3-2ubuntu0.1~esm4
Available with Ubuntu Pro

Ubuntu 18.04 LTS
liburiparser1 0.8.4-1+deb9u2ubuntu0.1+esm2
Available with Ubuntu Pro

Ubuntu 16.04 LTS
liburiparser1 0.8.4-1ubuntu0.16.04.1~esm5
Available with Ubuntu Pro

Ubuntu 14.04 LTS
liburiparser1 0.7.5-1ubuntu2+esm5
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-8409-1
CVE-2025-67899

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