Ubuntu Security Notices USN-8766-1 USN-8766-1: Suricata-Update vulnerability Publication date 15 September 2026 Overview Suricata-Update could be made to write files outside the rules directory if it processed a specially crafted rule archive. Releases 26.04 LTS 24.04 LTS 22.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages suricata-update - tool for updating Suricata rules Details Guillem Lefait discovered that Suricata-Update did not properly validate destination paths when extracting files referenced by downloaded rule archives. An attacker could possibly use this issue to write arbitrary files outside the configured rules directory. Guillem Lefait discovered that Suricata-Update did not properly validate destination paths when extracting files referenced by downloaded rule archives. An attacker could possibly use this issue to write arbitrary files outside the configured rules directory. 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 26.04 LTS resolute suricata-update – 1.3.7-2ubuntu0.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 24.04 LTS noble suricata-update – 1.3.0-2ubuntu0.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 22.04 LTS jammy suricata-update – 1.2.3-1ubuntu0.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 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-2026-63347 CVE-2026-63347