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Software · Apache httpd

Apache HTTP Server Vulnerabilities

The latest security flaws in the Apache HTTP Server (httpd), which ones attackers are using, and whether your version is affected.

New flaws, 30 days
3
Critical, 8 weeks
4
On CISA's exploited list
5
Latest exploited
1 May 2025

Run apachectl -v (or httpd -v) on the server.

Apache httpd Security in Short

Apache httpd is the web server behind most cPanel servers and many older sites. Only the 2.4 line is supported. Its flaws often sit in modules (mod_proxy, mod_rewrite, mod_http2), so whether one affects you depends on which modules are switched on.

How to Keep Apache Patched

  • Update through your distribution, or EasyApache on cPanel, then apachectl configtest && systemctl reload apache2 (or httpd).
  • Switch off modules you don't use (a2dismod on Debian and Ubuntu).
  • Hide the version: ServerTokens Prod and ServerSignature Off.

The Past Eight Weeks

Any Score 7+ 8+ 9+

4 flaws scored 9+, newest first.

1 Oct 2026 Memory corruption Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This… CVE-2026-56154 9.8

Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Patch now · NVD Record

1 Oct 2026 Memory corruption Use After Free vulnerability in Apache HTTP Server's mod_http2 via shared session->bbtmp re-entrancy This iss… CVE-2026-57941 9.8

Use After Free vulnerability in Apache HTTP Server's mod_http2 via shared session->bbtmp re-entrancy This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Patch now · NVD Record

1 Oct 2026 Privilege escalation Improper Privilege Management vulnerability in Apache HTTP Server's mod_ssl via SSLRequire and file-related e… CVE-2026-59797 9.8

Improper Privilege Management vulnerability in Apache HTTP Server's mod_ssl via SSLRequire and file-related expressions. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Patch now · NVD Record

22 Sep 2026 Apache HTTP Server · Access control flaw The Apache Lounge Windows distribution of Apache HTTP Server build contains an insecure installation director… CVE-2026-89282 9.1

The Apache Lounge Windows distribution of Apache HTTP Server build contains an insecure installation directory permissions vulnerability through its default install directory on C:\, which inherits write access for Authenticated Users.

Patch now · NVD Record

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