CVE-2025-49812: Improper Authentication

In some modssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommend...

Apache HTTP Server security vulnerabilities

Apache HTTP Server is the United States Apache Apache Foundation of an open source web server . The server is fast, reliable and can be expanded through a simple API. A denial of service vulnerability exists in Apache HTTP Server, which stems from a modproxyhttp2 assertion failure that can be...

Apache HTTP Server Access Control Vulnerability

Apache HTTP Server is the United States Apache Apache Foundation of an open source web server . The server is fast, reliable and can be expanded through a simple API. An Access Control Error vulnerability exists in Apache HTTP Server, which can be exploited by an attacker to cause an access contr...

Apache HTTP Server security vulnerabilities

Apache HTTP Server is the United States Apache Apache Foundation of an open source web server . The server is fast, reliable and can be expanded through a simple API. An unspecified vulnerability exists in Apache HTTP Server that stems from insufficient escaping of user-supplied data by modssl,...

PT-2025-29115

Name of the Vulnerable Software and Affected Versions: Apache HTTP Server versions 2.4.0 through 2.4.63 Description: A Server-Side Request Forgery SSRF issue exists in Apache HTTP Server on Windows. This issue potentially allows the leakage of NTLM hashes to a malicious server via mod rewrite or...

KLA85814 Multiple vulnerabilities in Apache HTTP Server

Multiple vulnerabilities were found in Apache HTTP Server. Malicious users can exploit these vulnerabilities to obtain sensitive information, bypass security restrictions, perform cross-site scripting attack, cause denial of service. Below is a complete list of vulnerabilities: 1. Insufficient...

CVE-2025-53020: Missing Release of Memory after Effective Lifetime

Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63. Users are recommended to upgrade to version 2.4.64, which fixes the issue...

CVE-2025-49630: Reachable Assertion

In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in modproxyhttp2. Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with...

CVE-2025-23048: Improper Access Control

In some modssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when modssl is configured for multiple virtual hosts, with each restricted to a different set of...

CVE-2024-47252: Improper Neutralization of Escape, Meta, or Control Sequences

Insufficient escaping of user-supplied data in modssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations. In a logging configuration where CustomLog is used with "%varnamex" or "%varnamec" to log variables...

CVE-2024-43394: Server-Side Request Forgery (SSRF)

Server-Side Request Forgery SSRF in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via modrewrite or apache expressions that pass unvalidated request input. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63. Note: The Apache HTTP Server...

CVE-2024-43204: Server-Side Request Forgery (SSRF)

SSRF in Apache HTTP Server with modproxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker. Requires an unlikely configuration where modheaders is configured to modify the Content-Type request or response header with a value provided in the HTTP request...

CVE-2024-42516: Improper Input Validation

HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP...

PT-2025-29120

Name of the Vulnerable Software and Affected Versions: Apache HTTP Server versions 2.4.17 through 2.4.63 Description: A late release of memory after effective lifetime issue exists in Apache HTTP Server. Recommendations: Upgrade to version 2.4.64...

Apache httpd -- Multiple vulnerabilities

The Apache httpd project reports: moderate: Apache HTTP Server: HTTP response splitting CVE-2024-42516 low: Apache HTTP Server: SSRF with modheaders setting Content-Type header CVE-2024-43204 moderate: Apache HTTP Server: SSRF on Windows due to UNC paths CVE-2024-43394 low: Apache HTTP Server:...

PT-2025-29220 · Apache · Apache Http Server

Name of the Vulnerable Software and Affected Versions: Apache HTTP Server affected versions not specified Description: A flaw exists that may allow unauthenticated remote code execution when a malicious folder is created via the web interface HTTP when it is enabled. HTTP is disabled by default...

Important: Red Hat Security Advisory: mod_auth_openidc security update

An update for modauthopenidc is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

mod_auth_openidc: DoS via Empty POST in mod_auth_openidc with OIDCPreservePost Enabled

A flaw was found in the modauthopenidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability...

mod_auth_openidc: DoS via Empty POST in mod_auth_openidc with OIDCPreservePost Enabled

A flaw was found in the modauthopenidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability...

Important: Red Hat Security Advisory: mod_auth_openidc:2.3 security update

An update for the modauthopenidc:2.3 module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common...