Apache Software Foundation Apache HTTP Server vulnerabilities, page 5
139 vulnerabilities
Known vulnerabilities in Apache Software Foundation Apache HTTP Server, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.
CVE-2024-38473apache software foundationapache http server+5
EPSS score25.88%
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.CVE-2024-38474apache software foundationapache http server+5EPSS score2.46%
Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in
directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified.CVE-2024-24795apache software foundationapache http server+16EPSS score2.87%
HTTP Response splitting in multiple modules in Apache HTTP Server allows an attacker that can inject malicious response headers into backend applications to cause an HTTP desynchronization attack.
Users are recommended to upgrade to version 2.4.59, which fixes this issue.CVE-2019-0196apache software foundationapache http server+6EPSS score19.96%
A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly.CVE-2019-0197apache software foundationapache http server+14EPSS score8.59%
A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.CVE-2019-0190apache software foundationapache http server+7EPSS score59.05%
A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or later, due to an interaction in changes to handling of renegotiation attempts.CVE-2019-0220apache software foundationapache http server+8EPSS score18.01%
A vulnerability was found in Apache HTTP Server 2.4.0 to 2.4.38. When the path component of a request URL contains multiple consecutive slashes ('/'), directives such as LocationMatch and RewriteRule must account for duplicates in regular expressions while other aspects of the servers processing will implicitly collapse them.CVE-2019-17567apache software foundationapache http server+7EPSS score60.27%
Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured.CVE-2026-63686apache software foundationapache http server+4EPSS score0.48%
A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.CVE-2026-63292apache software foundationapache http server+4EPSS score0.88%
Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.CVE-2026-63718apache software foundationapache http server+4EPSS score0.50%
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') response smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi and a crafted uwsgi response with Transfer-Encoding.
This issue affects Apache HTTP Server: from 2.4.30 through 2.4.68.CVE-2026-63045apache software foundationapache http server+4EPSS score0.47%
Improper validation of FTP PASV reply address in mod_proxy_ftp in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows, in forward proxy configurations, an untrusted FTP server to cause the proxy to open a data connection to an arbitrary third-party host via a crafted PASV response.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.CVE-2026-73637apache software foundationapache http server+4EPSS score0.48%
Use after free in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause authentication state corruption via concurrent Digest authentication requests when AuthDigestNcCheck is enabled or AuthDigestNonceLifetime is set to 0.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.CVE-2026-73636apache software foundationapache http server+4EPSS score0.41%
Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.CVE-2026-59685apache software foundationapache http server+4EPSS score0.50%
Out-of-bounds Write vulnerability in Apache HTTP Server on Windows while processing paths with 8.3 names that may grow when expanded.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.CVE-2026-59797apache software foundationapache http server+4EPSS score0.52%
Improper Privilege Management vulnerability in Apache HTTP Server's mod_ssl via SSLRequire and file-related expressions.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.CVE-2026-47360apache software foundationapache http server+4EPSS score0.39%
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache HTTP Server's mod_session_cookie module.
When SessionCookieRemove changes across internal redirects, the session cookie may still be passed to a backend server.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.CVE-2026-42535apache software foundationapache http server+4EPSS score0.71%
A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly manipulate trusted DAV property databases, potentially causing child process crashes.
Users are recommended to upgrade to version 2.4.68, which fixes this issue.CVE-2026-42528apache software foundationapache http server+4EPSS score0.42%
A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes.
Users are recommended to upgrade to version 2.4.69, which fixes this issueCVE-2026-42356apache software foundationapache http server+4EPSS score0.47%
Deployment of wrong handler vulnerability in Apache HTTP Server allows the target of some internal redirects from CGI programs to also be treated as CGI and executed. The target must already be in a directory enabled for CGI and have no other extension understood by mod_mime.
This issue affects Apache HTTP Server: from 2.4.60 through 2.4.68.