Severity: moderate Affected versions:
- Apache HTTP Server 2.4.0 through 2.4.68 Description: Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default. Users are recommended to upgrade to version 2.4.69, which fixes this issue. Credit: Hyojae Lee (finder) Zhen Kong (finder) References: https://httpd.apache.org/security/vulnerabilities_24.html https://httpd.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-63292 Timeline: 2026-06-17: Report received 2026-10-01: fixed in 2.4.x by r1938676 2026-10-01: 2.4.69 released
