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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 8 of 23

  1. HighCVSS 7.5 EPSS 1.2%

    The MakerBot Replicator 5G printer runs an Apache HTTP Server with directory indexing enabled. Apache logs, system logs, design files (i.e., a history of print files), and more are exposed to unauthenticated attackers through this HTTP server.

  2. MediumCVSS 4.3 EPSS 0.99%

    The Roundcube component of Analogic Poste.io 2.1.6 uses .htaccess to protect the logs/ folder, which is effective with the Apache HTTP Server but is ineffective with nginx. Attackers can read logs via the webmail/logs/sendmail URI.

  3. MediumCVSS 4.2 EPSS 8.3%

    A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration...

  4. MediumCVSS 5.3 EPSS 19.3%

    A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly.

  5. MediumCVSS 5.3 EPSS 17.9%

    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 se...

  6. CriticalCVSS 9.8 EPSS 70.4% Framework module Public exploit

    An issue was discovered in GetSimple CMS through 3.3.15. insufficient input sanitation in the theme-edit.php file allows upload of files with arbitrary content (PHP code, for example). This vulnerability is triggered by an authenticated user; however, authentication can be bypass...

  7. HighCVSS 7.8 EPSS 65.0% CISA KEV added 2021-11-03 Exploited in the wild

    In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent...

  8. HighCVSS 7.5 EPSS 16.4%

    In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.

  9. HighCVSS 7.5 EPSS 59.9%

    A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSS...

  10. HighCVSS 7.5 EPSS 20.0%

    In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded.

  11. MediumCVSS 5.3 EPSS 19.4%

    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.

  12. MediumCVSS 5.5 EPSS 0.77%

    The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincor...

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.