CVE-2022-31813

CVE-2022-31813 affects Apache HTTP Server 2.4.53 and older; due to hop-by-hop handling, X-Forwarded-* headers may be dropped to the origin server, which can enable bypass of IP-based authentication. All connected advisories indicate the fix is in Apache HTTP Server 2.4.54 and related updates in d...

CVE-2021-44790

CVE-2021-44790 affects Apache HTTP Server up to version 2.4.51. It describes a buffer overflow in the mod_lua multipart parser (triggered via r:parsebody() from Lua scripts). Connected documents corroborate this in various advisories and patch notes, indicating releases with fixes (e.g., patched ...

CVE-2021-39275

CVE-2021-39275 affects Apache HTTP Server (httpd) up to 2.4.48 and earlier. The issue is an out-of-bounds write in ap_escape_quotes() when given malicious input, potentially crashing the server or enabling code execution in some environments. Several connected sources concur this vulnerability ex...

CVE-2023-38709

CVE-2023-38709 describes HTTP response splitting in the core of Apache HTTP Server caused by faulty input validation. It affects Apache HTTP Server up to version 2.4.58; multiple advisories (e.g., Astra Linux, AlmaLinux, Alpine Linux) note that upgrading to 2.4.64 fixes the issue. Some sources in...

CVE-2022-28615

CVE-2022-28615 affects Apache HTTP Server 2.4.53 and earlier, where a read beyond bounds can occur in ap_strcmp_match() when given a very large input buffer. The issue may affect third‑party modules or lua scripts that call this function. Advisories in connected documents reference an official fi...

CVE-2016-8612

CVE-2016-8612 affects Apache HTTP Server mod_cluster prior to httpd 2.4.23, with a flaw in the protocol parsing logic of the load balancer that can cause a Segmentation Fault in the httpd process due to improper input validation. Exploitation details are not provided in the connected documents; r...

CVE-2022-37436

CVE-2022-37436 affects Apache HTTP Server in versions prior to 2.4.55. The issue allows a malicious backend to truncate response headers early, causing some headers to be incorporated into the response body and preventing the later headers from being interpreted by the client. Affected products i...

CVE-2006-20001

CVE-2006-20001 affects Apache HTTP Server 2.4.54 and earlier. The issue is triggered by a crafted If: header that can read memory or write a single zero byte in heap memory beyond the header value, potentially crashing the process. Industry advisories confirm the vulnerability in Apache httpd and...

CVE-2022-30556

The CVE-2022-30556 issue affects Apache HTTP Server (2.4.53 and earlier) where the wsread path may return a pointer past the end of the buffer, enabling information disclosure via websockets. Public references in connected sources corroborate: (1) industry advisories note an information disclosur...

CVE-2024-40898

The CVE-2024-40898 entry describes an SSRF vulnerability in Apache HTTP Server on Windows when using mod_rewrite in the server/vhost context. The issue can allow leaking NTLM hashes to a malicious server via crafted requests. Affected software is Apache HTTP Server; the remediation is to upgrade ...

CVE-2023-31122

CVE-2023-31122 is an out-of-bounds read vulnerability in Apache HTTP Server’s mod_macro affecting versions up to 2.4.57. Connected advisories (Debian, AlmaLinux, Amazon Linux, CIRCL sighting) confirm multiple distro advisories have issued patches and upgrades (e.g., Debian 2.4.59 fixes; AlmaLinux...

CVE-2025-58098

CVE-2025-58098 affects Apache HTTP Server 2.4.65 and earlier when Server Side Includes (SSI) is enabled and mod_cgid (not mod_cgi) passes the shell-escaped query string to #exec cmd="..." directives, enabling potential command injection. The issue impacts Apache HTTP Server before 2.4.66; remedia...

CVE-1999-0236

The CVE-1999-0236 entry describes a vulnerability in the ScriptAlias directory handling in NCSA and Apache httpd that allowed attackers to read CGI programs. Affected software is the Apache httpd family utilizing ScriptAlias configuration; the underlying issue is directory handling enabling discl...

CVE-2026-28780

CVE-2026-28780 is a heap-based buffer overflow in Apache HTTP Server’s mod_proxy_ajp (via ajp_msg_check_header()). Reports across Debian, FreeBSD/vuxml, Alpine, and NC SC advisories confirm impact on versions up to 2.4.66 and a fix in 2.4.67 . The issue allows memory corruption and can contribute...

CVE-2025-49812

CVE-2025-49812 affects Apache HTTP Server (httpd) via mod_ssl in some mod_ssl configurations up to version 2.4.63. An HTTP desynchronisation attack lets a MITM hijack a session during TLS upgrade when SSLEngine optional is used. Upgrading to httpd 2.4.64 (which removes TLS upgrade support) is the...

CVE-2005-3352

The CVE-2005-3352 entry documents a cross-site scripting (XSS) vulnerability in the Apache httpd mod_imap (and mod_imagemap) module. The issue arises from improper handling of the Referer header when using image maps, allowing an attacker to inject arbitrary script or HTML. Affected software is A...

CVE-2002-0061

Apache HTTP Server on Windows (Win32) is vulnerable prior to versions 1.3.24 and 2.0.x prior to 2.0.34-beta. The flaw allows remote attackers to execute arbitrary commands by sending shell metacharacters (a pipe |) as arguments to batch (.bat) or .cmd scripts, which reach the shell interpreter (c...

CVE-2026-33006

The CVE-2026-33006 issue affects Apache HTTP Server 2.4.66 and its mod_auth_digest component. A timing-based flaw allows a remote attacker to bypass Digest authentication. The known remediation is upgrading to Apache HTTP Server 2.4.67, which fixes the vulnerability. The NVD entry documents a MED...

CVE-2026-34032

CVE-2026-34032 is a vulnerability in Apache HTTP Server up to version 2.4.66, caused by a missing null-termination check in mod_proxy_ajp (ajp_msg_get_string) that leads to a heap buffer over-read. Affected product: Apache HTTP Server; vulnerable component: mod_proxy_ajp; root cause: missing null...

CVE-1999-0070

CVE-1999-0070 is associated with the generic test-cgi script vulnerability where an attacker can list files on the server. Red Hat and CVE listings confirm the issue stems from the test-cgi script. The Nessus plugin details an information-disclosure/remote command-execution style flaw: the script...

CVE-2026-33857

CVE-2026-33857 concerns the Apache HTTP Server, specifically the mod_proxy_ajp component, with an out-of-bounds read in AJP getter functions affecting versions up to 2.4.66. Upgrading to version 2.4.67 is the documented fix. The available connected sources confirm the affected product, the vulner...

CVE-2026-34059

CVE-2026-34059 affects Apache HTTP Server up to version 2.4.66, with a vulnerability in the mod_proxy_ajp component: a heap over-read in the ajp_parse_data() path that can lead to memory disclosure. The public description in multiple sources confirms the issue and the recommended mitigation is to...

CVE-2026-24072

CVE-2026-24072 is an escalation-of-privilege issue in Apache HTTP Server up to version 2.4.66, where local ".htaccess" authors can read files with the privileges of the httpd user due to a vulnerability in various modules (notably via the ap_expr/mod_rewrite path). The fixed version is 2.4.67. Pr...

CVE-2026-29169

CVE-2026-29169 : A NULL pointer dereference in mod_dav_lock of Apache HTTP Server 2.4.66 and earlier can crash the server when handling a malicious request. mod_dav_lock is not used internally by mod_dav or mod_dav_fs; the only known use-case was with mod_dav_svn from Apache Subversion (earlier t...