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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
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Latest Apache HTTP Server CVEs

Newest publication first · page 12 of 23

  1. MediumCVSS 5.0 EPSS 44.7%

    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.

  2. MediumCVSS 4.3 EPSS 37.3%

    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...

  3. MediumCVSS 4.3 EPSS 11.5%

    The cache_invalidate function in modules/cache/cache_storage.c in the mod_cache module in the Apache HTTP Server 2.4.6, when a caching forward proxy is enabled, allows remote HTTP servers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that tr...

  4. MediumCVSS 6.8 EPSS 85.8%

    Race condition in the mod_status module in the Apache HTTP Server before 2.4.10 allows remote attackers to cause a denial of service (heap-based buffer overflow), or possibly obtain sensitive credential information or execute arbitrary code, via a crafted request that triggers im...

  5. LowCVSS 2.6 EPSS 5.9%

    The phpinfo implementation in ext/standard/info.c in PHP before 5.4.30 and 5.5.x before 5.5.14 does not ensure use of the string data type for the PHP_AUTH_PW, PHP_AUTH_TYPE, PHP_AUTH_USER, and PHP_SELF variables, which might allow context-dependent attackers to obtain sensitive...

  6. MediumCVSS 5.0 EPSS 58.0%

    The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directives by placing a header in the trailer portion of data sent with chunked transfer coding. NOTE: the vendor states "this is not a security issue in httpd as such....

  7. LowCVSS 3.5 EPSS 0.85%

    The (1) ssl.conf and (2) httpd.conf files in the Apache HTTP Server component in IBM Netezza Performance Portal 2.0 before 2.0.0.4 have weak SSLCipherSuite values, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a brute-force attack.

  8. MediumCVSS 5.0 EPSS 26.7%

    The log_cookie function in mod_log_config.c in the mod_log_config module in the Apache HTTP Server before 2.4.8 allows remote attackers to cause a denial of service (segmentation fault and daemon crash) via a crafted cookie that is not properly handled during truncation.

  9. MediumCVSS 5.0 EPSS 27.5%

    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...

  10. LowCVSS 3.5 EPSS 5.9%

    The get_parent_resource function in repos.c in mod_dav_svn Apache HTTPD server module in Subversion 1.7.11 through 1.7.13 and 1.8.1 through 1.8.4, when built with assertions enabled and SVNAutoversioning is enabled, allows remote attackers to cause a denial of service (assertion...

  11. MediumCVSS 4.3 EPSS 1.2%

    Cross-site scripting (XSS) vulnerability in the mod_pagespeed module 0.x, 1.0.22.7, 1.1.x, 1.24.1, 1.3.25.1 through 1.3.25.4, 1.4.26.1 through 1.4.26.4, 1.5.27.1 through 1.5.27.3, and 1.6.29.1 through 1.6.29.6 for the Apache HTTP Server allows remote attackers to inject arbitrary...

  12. MediumCVSS 4.0 EPSS 4.4%

    The mod_dav_svn Apache HTTPD server module in Subversion 1.7.0 through 1.7.10 and 1.8.x before 1.8.1 allows remote authenticated users to cause a denial of service (assertion failure or out-of-bounds read) via a certain (1) COPY, (2) DELETE, or (3) MOVE request against a revision...

  13. HighCVSS 7.5 EPSS 14.6%

    mod_session_dbd.c in the mod_session_dbd module in the Apache HTTP Server before 2.4.5 proceeds with save operations for a session without considering the dirty flag and the requirement for a new session ID, which has unspecified impact and remote attack vectors.

  14. MediumCVSS 5.0 EPSS 13.7%

    The ModSecurity module before 2.7.4 for the Apache HTTP Server allows remote attackers to cause a denial of service (NULL pointer dereference, process crash, and disk consumption) via a POST request with a large body and a crafted Content-Type header.

  15. MediumCVSS 4.3 EPSS 29.5%

    mod_dav.c in the Apache HTTP Server before 2.2.25 does not properly determine whether DAV is enabled for a URI, which allows remote attackers to cause a denial of service (segmentation fault) via a MERGE request in which the URI is configured for handling by the mod_dav_svn modul...

  16. MediumCVSS 5.1 EPSS 24.9%

    mod_rewrite.c in the mod_rewrite module in the Apache HTTP Server 2.2.x before 2.2.25 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to execute arbitrary commands via an HTTP request containing an escape sequence for a te...

  17. MediumCVSS 4.3 EPSS 8.8%

    The mod_dav_svn Apache HTTPD server module in Subversion 1.6.x through 1.6.20 and 1.7.0 through 1.7.8 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a PROPFIND request for an activity URL.

  18. LowCVSS 2.1 EPSS 5.9%

    The mod_dav_svn Apache HTTPD server module in Subversion 1.6.x before 1.6.21 and 1.7.0 through 1.7.8 allows remote authenticated users to cause a denial of service (memory consumption) by (1) setting or (2) deleting a large number of properties for a file or directory.

  19. MediumCVSS 5.0 EPSS 51.4%

    The mod_dav_svn Apache HTTPD server module in Subversion 1.6.0 through 1.6.20 and 1.7.0 through 1.7.8 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an anonymous LOCK for a URL that does not exist.

  20. MediumCVSS 5.0 EPSS 50.5%

    The mod_dav_svn Apache HTTPD server module in Subversion 1.7.0 through 1.7.8 allows remote attackers to cause a denial of service (segmentation fault and crash) via a log REPORT request with an invalid limit, which triggers an access of an uninitialized variable.

  21. MediumCVSS 4.6 EPSS 8.8%

    phpMyAdmin 3.5.x before 3.5.8 and 4.x before 4.0.0-rc3, when a SaveDir directory is configured, allows remote authenticated users to execute arbitrary code by using a double extension in the filename of an export file, leading to interpretation of this file as an executable file...

  22. MediumCVSS 6.4 EPSS 1.7%

    The Apple mod_hfs_apple module for the Apache HTTP Server in Apple Mac OS X before 10.8.3 does not properly handle ignorable Unicode characters, which allows remote attackers to bypass intended directory authentication requirements via a crafted pathname in a URI.

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.