Vulnerabilities (CVE)

Filtered by vendor Apache Subscribe
Filtered by product Http Server
Total 327 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-1999-1199 1 Apache 1 Http Server 2025-04-03 10.0 HIGH N/A
Apache WWW server 1.3.1 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via a large number of MIME headers with the same name, aka the "sioux" vulnerability.
CVE-2005-1344 1 Apache 1 Http Server 2025-04-03 7.5 HIGH N/A
Buffer overflow in htdigest in Apache 2.0.52 may allow attackers to execute arbitrary code via a long realm argument. NOTE: since htdigest is normally only locally accessible and not setuid or setgid, there are few attack vectors which would lead to an escalation of privileges, unless htdigest is executed from a CGI program. Therefore this may not be a vulnerability.
CVE-2004-0809 8 Apache, Debian, Gentoo and 5 more 12 Http Server, Debian Linux, Linux and 9 more 2025-04-03 5.0 MEDIUM N/A
The mod_dav module in Apache 2.0.50 and earlier allows remote attackers to cause a denial of service (child process crash) via a certain sequence of LOCK requests for a location that allows WebDAV authoring access.
CVE-1999-1412 2 Apache, Apple 2 Http Server, Macos 2025-04-03 5.0 MEDIUM N/A
A possible interaction between Apple MacOS X release 1.0 and Apache HTTP server allows remote attackers to cause a denial of service (crash) via a flood of HTTP GET requests to CGI programs, which generates a large number of processes.
CVE-2004-0173 1 Apache 1 Http Server 2025-04-03 5.0 MEDIUM N/A
Directory traversal vulnerability in Apache 1.3.29 and earlier, and Apache 2.0.48 and earlier, when running on Cygwin, allows remote attackers to read arbitrary files via a URL containing "..%5C" (dot dot encoded backslash) sequences.
CVE-2002-1850 1 Apache 1 Http Server 2025-04-03 5.0 MEDIUM 7.5 HIGH
mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.
CVE-2006-3918 4 Apache, Canonical, Debian and 1 more 5 Http Server, Ubuntu Linux, Debian Linux and 2 more 2025-04-03 4.3 MEDIUM N/A
http_protocol.c in (1) IBM HTTP Server 6.0 before 6.0.2.13 and 6.1 before 6.1.0.1, and (2) Apache HTTP Server 1.3 before 1.3.35, 2.0 before 2.0.58, and 2.2 before 2.2.2, does not sanitize the Expect header from an HTTP request when it is reflected back in an error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated using a Flash SWF file.
CVE-2004-0748 1 Apache 1 Http Server 2025-04-03 5.0 MEDIUM N/A
mod_ssl in Apache 2.0.50 and earlier allows remote attackers to cause a denial of service (CPU consumption) by aborting an SSL connection in a way that causes an Apache child process to enter an infinite loop.
CVE-2024-38474 2 Apache, Netapp 2 Http Server, Clustered Data Ontap 2025-03-25 N/A 9.8 CRITICAL
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-2024-40725 1 Apache 1 Http Server 2025-03-14 N/A 5.3 MEDIUM
A partial fix for  CVE-2024-39884 in the core of Apache HTTP Server 2.4.61 ignores some use of the legacy content-type based configuration of handlers. "AddType" and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted. Users are recommended to upgrade to version 2.4.62, which fixes this issue.
CVE-2023-43622 1 Apache 1 Http Server 2025-02-13 N/A 7.5 HIGH
An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known "slow loris" attack pattern. This has been fixed in version 2.4.58, so that such connection are terminated properly after the configured connection timeout. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.57. Users are recommended to upgrade to version 2.4.58, which fixes the issue.
CVE-2006-20001 1 Apache 1 Http Server 2025-02-13 N/A 7.5 HIGH
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-2019-9517 12 Apache, Apple, Canonical and 9 more 25 Http Server, Traffic Server, Mac Os X and 22 more 2025-01-14 7.8 HIGH 7.5 HIGH
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.
CVE-2024-40898 2 Apache, Microsoft 2 Http Server, Windows 2024-11-21 N/A 7.5 HIGH
SSRF in Apache HTTP Server on Windows with mod_rewrite in server/vhost context, allows to potentially leak NTML hashes to a malicious server via SSRF and malicious requests. Users are recommended to upgrade to version 2.4.62 which fixes this issue. 
CVE-2022-30522 3 Apache, Fedoraproject, Netapp 3 Http Server, Fedora, Clustered Data Ontap 2024-11-21 5.0 MEDIUM 7.5 HIGH
If Apache HTTP Server 2.4.53 is configured to do transformations with mod_sed in contexts where the input to mod_sed may be very large, mod_sed may make excessively large memory allocations and trigger an abort.
CVE-2022-29404 3 Apache, Fedoraproject, Netapp 3 Http Server, Fedora, Clustered Data Ontap 2024-11-21 5.0 MEDIUM 7.5 HIGH
In Apache HTTP Server 2.4.53 and earlier, a malicious request to a lua script that calls r:parsebody(0) may cause a denial of service due to no default limit on possible input size.
CVE-2022-28614 3 Apache, Fedoraproject, Netapp 3 Http Server, Fedora, Clustered Data Ontap 2024-11-21 5.0 MEDIUM 5.3 MEDIUM
The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an attacker can cause the server to reflect very large input using ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use the 'ap_rputs' function and may pass it a very large (INT_MAX or larger) string must be compiled against current headers to resolve the issue.
CVE-2022-28330 2 Apache, Microsoft 2 Http Server, Windows 2024-11-21 5.0 MEDIUM 5.3 MEDIUM
Apache HTTP Server 2.4.53 and earlier on Windows may read beyond bounds when configured to process requests with the mod_isapi module.
CVE-2022-22721 5 Apache, Apple, Debian and 2 more 8 Http Server, Mac Os X, Macos and 5 more 2024-11-21 5.8 MEDIUM 9.1 CRITICAL
If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier.
CVE-2022-22720 5 Apache, Apple, Debian and 2 more 8 Http Server, Mac Os X, Macos and 5 more 2024-11-21 7.5 HIGH 9.8 CRITICAL
Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling