The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via an HTTP request with a larg...
Technology
Apache HTTP Server vulnerabilities
The Apache httpd web server. 553 published CVES affecting Apache HTTP Server, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 553
- Critical
- 46
- High
- 179
- Medium
- 242
- Low
- 28
- Unscored
- 58
- CISA KEV
- 11
Latest Apache HTTP Server CVEs
Newest publication first · page 16 of 23
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MediumCVSS 5.0 EPSS 4.3%
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Unknown
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MediumCVSS 6.4 EPSS 12.0%
Off-by-one error in the apr_brigade_vprintf function in Apache APR-util before 1.3.5 on big-endian platforms allows remote attackers to obtain sensitive information or cause a denial of service (application crash) via crafted input.
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MediumCVSS 4.3 EPSS 8.5%
The apr_strmatch_precompile function in strmatch/apr_strmatch.c in Apache APR-util before 1.3.5 allows remote attackers to cause a denial of service (daemon crash) via crafted input involving (1) a .htaccess file used with the Apache HTTP Server, (2) the SVNMasterURI directive in...
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HighCVSS 7.5 EPSS 53.0%
The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document contain...
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MediumCVSS 4.3 EPSS 3.0%
The PDF XSS protection feature in ModSecurity before 2.5.8 allows remote attackers to cause a denial of service (Apache httpd crash) via a request for a PDF file that does not use the GET method.
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MediumCVSS 4.9 EPSS 2.0%
The Apache HTTP Server 2.2.11 and earlier 2.2 versions does not properly handle Options=IncludesNOEXEC in the AllowOverride directive, which allows local users to gain privileges by configuring (1) Options Includes, (2) Options +Includes, or (3) Options +IncludesNOEXEC in a .htac...
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MediumCVSS 5.0 EPSS 12.4%
mod_proxy_ajp.c in the mod_proxy_ajp module in the Apache HTTP Server 2.2.11 allows remote attackers to obtain sensitive response data, intended for a client that sent an earlier POST request with no request body, via an HTTP request.
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LowCVSS 2.6 EPSS 29.6%
Cross-site scripting (XSS) vulnerability in Status.pm in Apache::Status and Apache2::Status in mod_perl1 and mod_perl2 for the Apache HTTP Server, when /perl-status is accessible, allows remote attackers to inject arbitrary web script or HTML via the URI.
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HighCVSS 7.5 EPSS 2.7%
Multiple unspecified vulnerabilities in DFLabs PTK 1.0.0 through 1.0.4 allow remote attackers to execute arbitrary commands in processes launched by PTK's Apache HTTP Server via (1) "external tools" or (2) a crafted forensic image.
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HighCVSS 7.5 EPSS 1.9%
SQL injection vulnerability in mod_auth_mysql.c in the mod-auth-mysql (aka libapache2-mod-auth-mysql) module for the Apache HTTP Server 2.x, when configured to use a multibyte character set that allows a \ (backslash) as part of the character encoding, allows remote attackers to...
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HighCVSS 9.3 EPSS 3.3%
Novell NetWare 6.5 before Support Pack 8, when an OES2 Linux server is installed into the NDS tree, does not require a password for the ApacheAdmin console, which allows remote attackers to reconfigure the Apache HTTP Server via console operations.
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MediumCVSS 5.0 EPSS 1.5%
Multiple unspecified vulnerabilities in the ModSecurity (aka mod_security) module 2.5.0 through 2.5.5 for the Apache HTTP Server, when SecCacheTransformations is enabled, allow remote attackers to cause a denial of service (daemon crash) or bypass the product's functionality via...
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MediumCVSS 4.3 EPSS 39.0%
Cross-site scripting (XSS) vulnerability in proxy_ftp.c in the mod_proxy_ftp module in Apache 2.0.63 and earlier, and mod_proxy_ftp.c in the mod_proxy_ftp module in Apache 2.2.9 and earlier 2.2 versions, allows remote attackers to inject arbitrary web script or HTML via a wildcar...
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MediumCVSS 5.0 EPSS 5.5%
Memory leak in the zlib_stateful_init function in crypto/comp/c_zlib.c in libssl in OpenSSL 0.9.8f through 0.9.8h allows remote attackers to cause a denial of service (memory consumption) via multiple calls, as demonstrated by initial SSL client handshakes to the Apache HTTP Serv...
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MediumCVSS 5.0 EPSS 12.7%
The ap_proxy_http_process_response function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server 2.0.63 and 2.2.8 does not limit the number of forwarded interim responses, which allows remote HTTP servers to cause a denial of service (memory consumption) via a la...
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Unknown
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MediumCVSS 4.3 EPSS 54.9% Public exploit
Cross-site scripting (XSS) vulnerability in Apache 2.2.6 and earlier allows remote attackers to inject arbitrary web script or HTML via UTF-7 encoded URLs that are not properly handled when displaying the 403 Forbidden error page.
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LowCVSS 3.6 EPSS 0.35%
Interpretation conflict in PHP Toolkit before 1.0.1 on Gentoo Linux might allow local users to cause a denial of service (PHP outage) and read contents of PHP scripts by creating a file with a one-letter lowercase alphabetic name, which triggers interpretation of a certain unquot...
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LowCVSS 2.6 EPSS 19.0%
CRLF injection vulnerability in the mod_negotiation module in the Apache HTTP Server 2.2.6 and earlier in the 2.2.x series, 2.0.61 and earlier in the 2.0.x series, and 1.3.39 and earlier in the 1.3.x series allows remote authenticated users to inject arbitrary HTTP headers and co...
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MediumCVSS 4.3 EPSS 64.9%
Cross-site scripting (XSS) vulnerability in the mod_negotiation module in the Apache HTTP Server 2.2.6 and earlier in the 2.2.x series, 2.0.61 and earlier in the 2.0.x series, and 1.3.39 and earlier in the 1.3.x series allows remote authenticated users to inject arbitrary web scr...
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MediumCVSS 4.3 EPSS 14.7%
mod_proxy_ftp in Apache 2.2.x before 2.2.7-dev, 2.0.x before 2.0.62-dev, and 1.3.x before 1.3.40-dev does not define a charset, which allows remote attackers to conduct cross-site scripting (XSS) attacks using UTF-7 encoding.
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MediumCVSS 4.3 EPSS 9.1%
Cross-site request forgery (CSRF) vulnerability in the balancer-manager in mod_proxy_balancer for Apache HTTP Server 2.2.x allows remote attackers to gain privileges via unspecified vectors.
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LowCVSS 3.5 EPSS 8.3%
Cross-site scripting (XSS) vulnerability in balancer-manager in mod_proxy_balancer in the Apache HTTP Server 2.2.0 through 2.2.6 allows remote attackers to inject arbitrary web script or HTML via the (1) ss, (2) wr, or (3) rr parameters, or (4) the URL.
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MediumCVSS 4.0 EPSS 10.0%
The balancer_handler function in mod_proxy_balancer in the Apache HTTP Server 2.2.0 through 2.2.6, when a threaded Multi-Processing Module is used, allows remote authenticated users to cause a denial of service (child process crash) via an invalid bb variable.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.