CVE-2023-25690

CVE-2023-25690 concerns Apache HTTP Server 2.4.0–2.4.55 with mod_proxy enabled when combined with certain RewriteRule or ProxyPassMatch patterns that re-insert user-supplied URL data into the proxied request-target via variable substitution. The underlying flaw enables HTTP request smuggling thro...

CVE-2024-36387

CVE-2024-36387 affects the Apache httpd mod_http2 component: when serving WebSocket protocol upgrades over HTTP/2, it can trigger a NULL pointer dereference and crash the server, degrading performance (DoS). Connected advisories indicate patches across distributions (e.g., Debian security update ...

CVE-2023-43622

CVE-2023-43622 affects Apache HTTP Server via the mod_http2 implementation. An attacker opening an HTTP/2 connection with an initial window size of 0 could block handling of that connection indefinitely, potentially exhausting server worker resources in a pattern similar to the slow loris attack....

CVE-2026-48913

This CVE (CVE-2026-48913) concerns Apache HTTP Server’s mod_http2 component. The reported issue is a Use After Free vulnerability when file handles are exhausted, affecting Apache HTTP Server versions 2.4.55–2.4.67. The description and connected sources consistently cite memory- or resource-relat...