The vulnerability of the mod_ssl function in the Apache HTTP Server web server allows a hacker to gain unauthorized access to protected information.

The vulnerability of the modssl function in the Apache HTTP Server is related to access control errors. Exploiting this vulnerability can allow a malicious actor, operating remotely, to gain unauthorized access to protected information...

The vulnerability of the mod_proxy module in the Apache HTTP Server allows a hacker to perform an SSRF attack.

The vulnerability of the modproxy module in the Apache HTTP Server is related to insufficient validation of requests at the server side. Exploiting this vulnerability allows a malicious actor to perform an SSRF attack remotely...

USN-6885-5 apache2 vulnerabilities

USN-6885-1 fixed vulnerabilities in Apache. This update provides the corresponding updates for Ubuntu 14.04 LTS. Original advisory details: Orange Tsai discovered that the Apache HTTP Server modrewrite module incorrectly handled certain substitutions. A remote attacker could possibly use this iss...

The vulnerability of the mod_proxy_http2 function in the Apache HTTP Server allows a hacker to cause a service failure.

The vulnerability of the modproxyhttp2 function in the Apache HTTP Server is related to the use of the assert function or similar operators. Exploiting this vulnerability can allow a remote attacker to cause a service failure...

The vulnerability of the mod_ssl function in the Apache HTTP Server’s web server allows a hacker to cause a service failure.

The vulnerability of the modssl function in the Apache HTTP Server is related to deficiencies in the authentication process when processing the SSLEngine option. Exploiting this vulnerability allows a malicious actor to cause service failures using the TLS protocol...

Apache HTTP Server: mod_proxy_http2 denial of service

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USN-7639-1 apache2 vulnerabilities

It was discovered that the Apache HTTP Server incorrectly handled certain Content-Type response headers. A remote attacker could possibly use this issue to perform HTTP response splitting attacks. CVE-2024-42516 xiaojunjie discovered that the Apache HTTP Server modproxy module incorrectly handled...

OESA-2025-1753 mod_security security update

Security Fixes: A vulnerability was found in OWASP ModSecurity 2.9.8/2.9.10 and classified as critical.Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary...

UBUNTU-CVE-2024-43394

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...

SUSE CVE-2024-43204

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...

SUSE CVE-2024-47252

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...

ALPINE-CVE-2025-49630

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...

AZL-65133 CVE-2025-49630 affecting package mod_http2 1.15.14-2

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...

AZL-65112 CVE-2025-49812 affecting package httpd for versions less than 2.4.64-1

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...

ALPINE-CVE-2025-49812

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...

AZL-65220 CVE-2025-49630 affecting package httpd for versions less than 2.4.64-1

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...

ALPINE-CVE-2024-47252

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...

ALPINE-CVE-2024-43394

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...

AZL-65172 CVE-2024-47252 affecting package httpd for versions less than 2.4.64-1

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...

AZL-65223 CVE-2025-23048 affecting package httpd for versions less than 2.4.64-1

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...