USN-8338-1 apache2 vulnerabilities

It was discovered that Apache HTTP Server incorrectly handled certain response headers. An attacker could possibly use this issue to perform HTTP response splitting attacks. This issue only affected Ubuntu 14.04 LTS. CVE-2023-38709 Will Dormann and David Warren discovered that Apache HTTP Server'...

RHEL 9 : httpd (RHSA-2026:21391)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:21391 advisory. The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fixes: httpd: modproxyajp:...

httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the ajpparsedata function attempts to read data beyond the allocated buffer size, allowing an attacker or a malformed request to cause a heap-based buffer over-read. This issue potentially lea...

httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the AJP getter functions attempt to read data beyond the allocated buffer size, allowing an attacker or a malformed request to cause an out-of-bounds read. This issue leads to a denial of...

httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash

A flaw was found in the modauthnsocache module of httpd. This vulnerability allows an unauthenticated remote user to crash a child process due to a NULL pointer dereference when the server is operating in a caching forward proxy configuration...

Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow

A flaw was found in modproxyajp of Apache HTTP Server. This heap-based buffer overflow vulnerability allows a remote attacker, by connecting to a malicious AJP Apache JServ Protocol server, to send a specially crafted message. This message can cause modproxyajp to write attacker-controlled data...

httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash

A flaw was found in the modauthnsocache module of httpd. This vulnerability allows an unauthenticated remote user to crash a child process due to a NULL pointer dereference when the server is operating in a caching forward proxy configuration...

Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow

A flaw was found in modproxyajp of Apache HTTP Server. This heap-based buffer overflow vulnerability allows a remote attacker, by connecting to a malicious AJP Apache JServ Protocol server, to send a specially crafted message. This message can cause modproxyajp to write attacker-controlled data...

Important: httpd security update

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fixes: httpd: modproxyajp: heap-based buffer over-read and memory disclosure in ajpparsedata CVE-2026-34059 httpd: modproxyajp: heap-based buffer over-read due to missing null-termination...

Amazon Linux 2023 : mod_http2 (ALAS2023-2026-1724)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1724 advisory. Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes...

ALSA-2026:21433 Important: httpd security update

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fixes: httpd: modproxyajp: heap-based buffer over-read and memory disclosure in ajpparsedata CVE-2026-34059 httpd: modproxyajp: heap-based buffer over-read due to missing null-termination...

Amazon Linux 2 : httpd, --advisory ALAS2-2026-3314 (ALAS-2026-3314)

The version of httpd installed on the remote host is prior to 2.4.67-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3314 advisory. An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read...

PT-2026-44503

CVE-2026-42347 - Apache HTTP Server Authentication Bypass CVE ID :CVE-2026-42347 Published : May 26, 2026, 3:16 p.m. | 53 minutes ago Description :Rejected reason: REJECT DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-28496. Reason: This candidate is a duplicate of CVE-2026-28496. Notes:...

Apache HTTP Server 2.4.66 - 'mod_http2' Double-Free Denial of Service

Exploit Title: Apache HTTP Server 2.4.66 - 'modhttp2' Double-Free Denial of Service Google Dork: intext:"Apache/2.4.66" "HTTP/2" Date: 2026-05-06 Exploit Author: xeloxa https://github.com/xeloxa/ Vendor Homepage: https://httpd.apache.org/ Software Link:...

PT-2026-43620

Name of the Vulnerable Software and Affected Versions radvd versions prior to 2.21 Description The radvdump utility contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, the print ff function copies up to 2032 bytes of...

Amazon Linux 2023 : httpd, httpd-core, httpd-devel (ALAS2023-2026-1720)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1720 advisory. An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user. Users are recommended to...

Important: httpd

Issue Overview: An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user. Users are recommended to upgrade to version 2.4.67, which fixes this issue. CVE-2026-24072 Heap-based Buffer...

Important: mod_http2

Issue Overview: Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. CVE-2026-23918 Affected Packages: modhttp2 Issue Correction: Run dnf...

[SECURITY] Fedora 43 Update: httpd-2.4.67-1.fc43

The Apache HTTP Server is a powerful, efficient, and extensible web server...

OESA-2026-2402 httpd security update

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Security Fixes: A NULL pointer dereference in the modauthnsocache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration. Users ar...