Critical Vulnerabilities Found in Apache HTTP Server Affecting Multiple Modules

On July 8, 2026, multiple vulnerabilities were disclosed in the Apache HTTP Server, affecting various modules including mod_ldap, mod_proxy_ftp, and mod_proxy_html. These vulnerabilities could lead to denial of service attacks or arbitrary code execution. Specifically, CVE-2026-29167 allows attackers to crash the server via mod_ldap, while CVE-2026-29170 enables HTML injection via mod_proxy_ftp. Other vulnerabilities, such as CVE-2026-34355 and CVE-2026-34356, also pose significant risks by allowing denial of service through improper handling of content. The vulnerabilities impact Apache HTTP Server versions across multiple Ubuntu LTS releases. Users are advised to update their systems to mitigate these risks. The vulnerabilities were published on June 8, 2026, and patches are available.

Key Points: • Multiple critical vulnerabilities in Apache HTTP Server could lead to denial of service and code execution. • Affected modules include mod_ldap, mod_proxy_ftp, and mod_proxy_html, with several CVEs disclosed. • Users are urged to update their systems to the latest package versions to mitigate risks.