Ubuntu Security Notices USN-8409-1 USN-8409-1: uriparser vulnerability Publication date 9 June 2026 Overview uriparser could be made to crash if it received specially crafted input. Releases 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS 14.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages 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. 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 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 24.04 LTS noble liburiparser1 – 0.9.7+dfsg-2ubuntu0.1~esm2 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 22.04 LTS jammy liburiparser1 – 0.9.6+dfsg-1ubuntu0.1~esm2 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 20.04 LTS focal liburiparser1 – 0.9.3-2ubuntu0.1~esm4 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 18.04 LTS bionic liburiparser1 – 0.8.4-1+deb9u2ubuntu0.1+esm2 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 16.04 LTS xenial liburiparser1 – 0.8.4-1ubuntu0.16.04.1~esm5 14.04 LTS trusty liburiparser1 – 0.7.5-1ubuntu2+esm5 Ubuntu Pro Fix available with Ubuntu Pro via Legacy Support add-on. Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2025-67899 CVE-2025-67899