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CVE-2026-119618

Apache HTTP Server: mod_http2: heap corruption and RCE in assign_headers

Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70. Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Http Server Http Server Apache Http Server and 4 more
CVE-2024-38472

Apache HTTP Server on WIndows UNC SSRF

SSRF in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.60 which fixes this issue.  Note: Existing configurations that access UNC paths will have to configure new directive "UNCList" to allow access during request processing.

CVSS 3.1 · 7.5 High EPSS 69.5% KEV · Not listed
Vendors
Apache Apache Software Foundation Netapp and 1 more
Products
Http Server Apache Http Server Ontap and 1 more
CVE-2026-29170

Apache HTTP Server: mod_proxy_ftp XSS

A cross-site scripting vulnerability exists in mod_proxy_ftp's HTML directory list generation in Apache HTTP Server 2.4.67 and earlier when listing FTP directory contents either via forward or reverse proxy configuration. Users are recommended to upgrade to version 2.4.68, which fixes this issue.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation
Products
Http Server Apache Http Server
CVE-2026-29169

Apache HTTP Server: mod_dav_lock indirect lock crash

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation
Products
Http Server Apache Http Server
CVE-2025-23048

Apache HTTP Server: mod_ssl access control bypass with session resumption

In some mod_ssl 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 mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.

CVSS 3.1 · 9.1 Critical EPSS 1.0% KEV · Not listed
Vendors
Apache Apache Software Foundation
Products
Http Server Apache Http Server
CVE-2025-49812

Apache HTTP Server: mod_ssl TLS upgrade attack

In some mod_ssl 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 recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation
Products
Http Server Apache Http Server
CVE-2024-43204

Apache HTTP Server: SSRF with mod_headers setting Content-Type header

SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker.  Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request. Users are recommended to upgrade to version 2.4.64 which fixes this issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation
Products
Http Server Apache Http Server
CVE-2024-38473

Apache HTTP Server proxy encoding problem

Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

CVSS 3.1 · 8.1 High EPSS 25.9% KEV · Not listed
Vendors
Apache Apache Software Foundation Netapp and 1 more
Products
Http Server Apache Http Server Ontap and 3 more