HS
Web Server
HTTP Server
On CISA KEVExploited in the wildRansomware-linked
351
CVEs
5
On KEV
9.8
Max CVSS
20
New 30D
Severity mix
Critical 33High 93Medium 43Low 1
Watch
Add HTTP Server to your stack to get only the CVEs that touch what you run.
| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2026-43951 | 6.5 | Jun 8 | Apache HTTP Server: OOB Read in `merge_response_headers` can cause crash Affected: 2.4.0 through 2.4.67 |
| CVE-2026-33523 | 6.5 | May 4 | Apache HTTP Server: multiple modules: HTTP response splitting forwarding malicious status line Affected: 2.4.0 through 2.4.66 |
| CVE-2025-65082 | 6.5 | Dec 5 | Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly… Affected: 2.4.0 before 2.4.66 |
| CVE-2017-12171 | 6.5 | Jul 26 | 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 Affected: 2.2.15-60 |
| CVE-2025-54090 | 6.3 | Jul 23 | A bug in Apache HTTP Server 2.4.64 results in all "RewriteCond expr ..." tests evaluating as "true" Affected: 2.4.64 |
| CVE-2024-24795 | 6.3 | Apr 4 | 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… Affected: 2.4.0 before 2.4.59 |
| CVE-2024-39884 | 6.2 | Jul 4 | A regression in the core of Apache HTTP Server 2.4.60 ignores some use of the legacy content-type based configuration of handlers. "AddType" and similar configuration, under… Affected: 2.4.60 |
| CVE-2026-29170 | 6.1 | Jun 8 | Apache HTTP Server: mod_proxy_ftp XSS Affected: through 2.4.67 |
| CVE-2020-1927 | 6.1 | Apr 2 | In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to… Affected: 2.4.0 through 2.4.41 |
| CVE-2019-10092 | 6.1 | Sep 26 | In Apache HTTP Server 2.4.0-2.4.39, a limited cross-site scripting issue was reported affecting the mod_proxy error page Affected: 2.4.0 through 2.4.39 |
| CVE-2019-10098 | 6.1 | Sep 25 | In Apache HTTP server 2.4.0 to 2.4.39, Redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to… Affected: 2.4.0 through 2.4.39 |
| CVE-2016-4975 | 6.1 | Aug 14 | mod_userdir CRLF injection Affected: Fixed in Apache HTTP Server 2.4.25 (Affected 2.4.1-2.4.23); Fixed in Apache HTTP Server 2.2.32 (Affected 2.2.0-2.2.31) |
| CVE-2007-4465 | 6.1 | Sep 14 | Cross-site scripting (XSS) vulnerability in mod_autoindex.c in the Apache HTTP Server before 2.2.6, when the charset on a server-generated page is not defined, allows remote… Affected: 2.0.0 before 2.0.61; 2.2.0 before 2.2.6 |
| CVE-2023-45802 | 5.9 | Oct 23 | When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately Affected: 2.4.17 before 2.4.58 |
| CVE-2018-11763 | 5.9 | Sep 25 | In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout… Affected: 2.4.17 through 2.4.34 |
| CVE-2018-1302 | 5.9 | Mar 26 | When an HTTP/2 stream was destroyed after being handled, the Apache HTTP Server prior to version 2.4.30 could have written a NULL pointer potentially to an already freed memory Affected: through 2.4.29 |
| CVE-2018-1301 | 5.9 | Mar 26 | 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… Affected: through 2.4.29 |
| CVE-2016-1546 | 5.9 | Jul 6 | The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote… Affected: 2.4.17; 2.4.18 |
| CVE-2026-44119 | 5.5 | Jun 8 | Apache HTTP Server: escalation of privilege through expressions in .htaccess in multiple modules Affected: 2.4.0 through 2.4.67 |
| CVE-2020-13938 | 5.5 | Jun 10 | Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows Affected: 2.4.0 through 2.4.46 |
| CVE-2025-66200 | 5.4 | Dec 5 | mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server Affected: 2.4.7 before 2.4.66 |
| CVE-2024-36387 | 5.4 | Jul 1 | Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance Affected: 2.4.55 through 2.4.59 |
| CVE-2026-79768 | 5.3 | Oct 1 | Apache HTTP Server: mod_userdir information disclosure Affected: 2.4.0 through 2.4.68 |
| CVE-2026-58415 | 5.3 | Oct 1 | Apache HTTP Server: mod_dav_fs property database read access Affected: 2.4.0 through 2.4.68 |
| CVE-2026-33007 | 5.3 | May 4 | Apache HTTP Server: mod_authn_socache crash Affected: 2.4.0 through 2.4.66 |
| CVE-2026-33857 | 5.3 | May 4 | Apache HTTP Server: Off-by-one OOB reads in AJP getter functions Affected: through 2.4.66 |
| CVE-2026-34032 | 5.3 | May 4 | Apache HTTP Server: mod_proxy_ajp: Heap Buffer Over-Read Due to Missing Null-Termination Check (ajp_msg_get_string) Affected: through 2.4.66 |
| CVE-2024-40725 | 5.3 | Jul 18 | 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 Affected: 2.4.60; 2.4.61 |
| CVE-2022-37436 | 5.3 | Jan 17 | Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body Affected: before 2.4.55 |
| CVE-2022-28614 | 5.3 | Jun 9 | 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… Affected: through 2.4.53 |
| CVE-2022-28330 | 5.3 | Jun 9 | Apache HTTP Server 2.4.53 and earlier on Windows may read beyond bounds when configured to process requests with the mod_isapi module Affected: through 2.4.53 |
| CVE-2021-30641 | 5.3 | Jun 10 | Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF' Affected: 2.4.39 through 2.4.46 |
| CVE-2019-17567 | 5.3 | Jun 10 | 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… Affected: 2.4.6 through 2.4.46 |
| CVE-2020-11985 | 5.3 | Aug 7 | IP address spoofing when proxying using mod_remoteip and mod_rewrite For configurations using proxying with mod_remoteip and certain mod_rewrite rules, an attacker could spoof… Affected: 2.4.1 through 2.4.23 |
| CVE-2020-1934 | 5.3 | Apr 1 | In Apache HTTP Server 2.4.0 to 2.4.41, mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server Affected: 2.4.0 through 2.4.41 |
| CVE-2019-0196 | 5.3 | Jun 11 | A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38 Affected: 2.4.17 through 2.4.38 |
| CVE-2019-0220 | 5.3 | Jun 11 | A vulnerability was found in Apache HTTP Server 2.4.0 to 2.4.38 Affected: 2.4.0 through 2.4.38 |
| CVE-2018-17189 | 5.3 | Jan 30 | 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… Affected: 2.4.17 to 2.4.37 |
| CVE-2018-1283 | 5.3 | Mar 26 | In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their… Affected: 2.4.0 through 2.4.29 |
| CVE-2026-33006 | 4.8 | May 4 | Apache HTTP Server: mod_auth_digest timing attack Affected: through 2.4.66 |
| CVE-2026-42528 | 4.3 | Oct 1 | Apache HTTP Server: mod_dav shared lock overflow Affected: through 2.4.68 |
| CVE-2016-8612 | 4.3 | Mar 9 | Apache HTTP Server mod_cluster before version httpd 2.4.23 is vulnerable to an Improper Input Validation in the protocol parsing logic in the load balancer resulting in a… Affected: before 2.4.23 |
| CVE-2019-0197 | 4.2 | Jun 11 | A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38 Affected: 2.4.34 through 2.4.38 |
Showing 43
