Apache Http Server vulnerabilities

CVE-2005-3352 [MEDIUM] CWE-79 CVE-2005-3352: Cross-site scripting (XSS) vulnerability in the mod_imap module of Apache httpd before 1.3.35-dev an Cross-site scripting (XSS) vulnerability in the mod_imap module of Apache httpd before 1.3.35-dev and Apache httpd 2.0.x before 2.0.56-dev allows remote attackers to inject arbitrary web script or HTML via the Referer when using image maps.

CVE-2023-31122 [HIGH] CWE-125 CVE-2023-31122: Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.This issue affects Apache HTTP S Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.This issue affects Apache HTTP Server: through 2.4.57.

CVE-2006-4154 [MEDIUM] CVE-2006-4154: Format string vulnerability in the mod_tcl module 1.0 for Apache 2.x allows context-dependent attack Format string vulnerability in the mod_tcl module 1.0 for Apache 2.x allows context-dependent attackers to execute arbitrary code via format string specifiers that are not properly handled in a set_var function call in (1) tcl_cmds.c and (2) tcl_core.c.

CVE-2018-17189 [MEDIUM] CWE-400 CVE-2018-17189: In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to pl In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections.

CVE-2015-3185 [MEDIUM] CWE-264 CVE-2015-3185: The ap_some_auth_required function in server/request.c in the Apache HTTP Server 2.4.x before 2.4.14 The ap_some_auth_required function in server/request.c in the Apache HTTP Server 2.4.x before 2.4.14 does not consider that a Require directive may be associated with an authorization setting rather than an authentication setting, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging the pres

CVE-2007-6388 [MEDIUM] CWE-79 CVE-2007-6388: Cross-site scripting (XSS) vulnerability in mod_status in the Apache HTTP Server 2.2.0 through 2.2.6 Cross-site scripting (XSS) vulnerability in mod_status in the Apache HTTP Server 2.2.0 through 2.2.6, 2.0.35 through 2.0.61, and 1.3.2 through 1.3.39, when the server-status page is enabled, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

CVE-2014-0231 [MEDIUM] CWE-399 CVE-2014-0231: The mod_cgid module in the Apache HTTP Server before 2.4.10 does not have a timeout mechanism, which The mod_cgid module in the Apache HTTP Server before 2.4.10 does not have a timeout mechanism, which allows remote attackers to cause a denial of service (process hang) via a request to a CGI script that does not read from its stdin file descriptor.

CVE-2025-49630 [HIGH] CWE-617 CVE-2025-49630: In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4. 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 mod_proxy_http2. Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".

CVE-2003-0016 [HIGH] CVE-2003-0016: Apache before 2.0.44, when running on unpatched Windows 9x and Me operating systems, allows remote a Apache before 2.0.44, when running on unpatched Windows 9x and Me operating systems, allows remote attackers to cause a denial of service or execute arbitrary code via an HTTP request containing MS-DOS device names.

CVE-2018-1301 [MEDIUM] CWE-119 CVE-2018-1301: A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due t A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server us

CVE-2006-20001 [HIGH] CWE-787 CVE-2006-20001: A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. This could cause the process to crash. This issue affects Apache HTTP Server 2.4.54 and earlier.

CVE-2002-0843 [HIGH] CVE-2002-0843: Buffer overflows in the ApacheBench benchmark support program (ab.c) in Apache before 1.3.27, and Ap Buffer overflows in the ApacheBench benchmark support program (ab.c) in Apache before 1.3.27, and Apache 2.x before 2.0.43, allow a malicious web server to cause a denial of service and possibly execute arbitrary code via a long response.

CVE-2009-1890 [HIGH] CWE-400 CVE-2009-1890: The stream_reqbody_cl function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server The stream_reqbody_cl function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server before 2.3.3, when a reverse proxy is configured, does not properly handle an amount of streamed data that exceeds the Content-Length value, which allows remote attackers to cause a denial of service (CPU consumption) via crafted requests.

CVE-2023-27522 [HIGH] CWE-444 CVE-2023-27522: HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client.

CVE-2014-8109 [MEDIUM] CWE-863 CVE-2014-8109: mod_lua.c in the mod_lua module in the Apache HTTP Server 2.3.x and 2.4.x through 2.4.10 does not su mod_lua.c in the mod_lua module in the Apache HTTP Server 2.3.x and 2.4.x through 2.4.10 does not support an httpd configuration in which the same Lua authorization provider is used with different arguments within different contexts, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging multi

CVE-2012-0031 [MEDIUM] CVE-2012-0031: scoreboard.c in the Apache HTTP Server 2.2.21 and earlier might allow local users to cause a denial scoreboard.c in the Apache HTTP Server 2.2.21 and earlier might allow local users to cause a denial of service (daemon crash during shutdown) or possibly have unspecified other impact by modifying a certain type field within a scoreboard shared memory segment, leading to an invalid call to the free function.

CVE-2017-12171 [MEDIUM] CWE-284 CVE-2017-12171: A regression was found in the Red Hat Enterprise Linux 6.9 version of httpd 2.2.15-60, causing comme A regression was found in the Red Hat Enterprise Linux 6.9 version of httpd 2.2.15-60, causing comments in the "Allow" and "Deny" configuration lines to be parsed incorrectly. A web administrator could unintentionally allow any client to access a restricted HTTP resource.

CVE-2014-0118 [MEDIUM] CWE-400 CVE-2014-0118: The deflate_in_filter function in mod_deflate.c in the mod_deflate module in the Apache HTTP Server The deflate_in_filter function in mod_deflate.c in the mod_deflate module in the Apache HTTP Server before 2.4.10, when request body decompression is enabled, allows remote attackers to cause a denial of service (resource consumption) via crafted request data that decompresses to a much larger size.

CVE-2013-6438 [MEDIUM] CVE-2013-6438: The dav_xml_get_cdata function in main/util.c in the mod_dav module in the Apache HTTP Server before The dav_xml_get_cdata function in main/util.c in the mod_dav module in the Apache HTTP Server before 2.4.8 does not properly remove whitespace characters from CDATA sections, which allows remote attackers to cause a denial of service (daemon crash) via a crafted DAV WRITE request.

CVE-2019-0220 [MEDIUM] CWE-706 CVE-2019-0220: A vulnerability was found in Apache HTTP Server 2.4.0 to 2.4.38. When the path component of a reques 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.