Filtered by vendor Apache
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Filtered by product Http Server
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Total
308 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2021-40438 | 11 Apache, Broadcom, Debian and 8 more | 45 Http Server, Brocade Fabric Operating System Firmware, Debian Linux and 42 more | 2025-05-16 | 9 Critical |
| A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. | ||||
| CVE-2025-3891 | 3 Apache, Debian, Redhat | 3 Http Server, Debian Linux, Enterprise Linux | 2025-05-12 | 5.3 Medium |
| A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability. | ||||
| CVE-2024-38475 | 3 Apache, Netapp, Redhat | 9 Http Server, Ontap 9, Enterprise Linux and 6 more | 2025-05-02 | 9.1 Critical |
| Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained. | ||||
| CVE-2020-11993 | 8 Apache, Canonical, Debian and 5 more | 16 Http Server, Ubuntu Linux, Debian Linux and 13 more | 2025-05-01 | 7.5 High |
| Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers. | ||||
| CVE-2021-33193 | 6 Apache, Debian, Fedoraproject and 3 more | 9 Http Server, Debian Linux, Fedora and 6 more | 2025-05-01 | 7.5 High |
| A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48. | ||||
| CVE-2021-36160 | 7 Apache, Broadcom, Debian and 4 more | 16 Http Server, Brocade Fabric Operating System Firmware, Debian Linux and 13 more | 2025-05-01 | 7.5 High |
| A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive). | ||||
| CVE-2021-39275 | 7 Apache, Debian, Fedoraproject and 4 more | 14 Http Server, Debian Linux, Fedora and 11 more | 2025-05-01 | 9.8 Critical |
| ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier. | ||||
| CVE-2021-44790 | 8 Apache, Apple, Debian and 5 more | 20 Http Server, Mac Os X, Macos and 17 more | 2025-05-01 | 9.8 Critical |
| A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier. | ||||
| CVE-2022-23943 | 5 Apache, Debian, Fedoraproject and 2 more | 8 Http Server, Debian Linux, Fedora and 5 more | 2025-05-01 | 9.8 Critical |
| Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite heap memory with possibly attacker provided data. This issue affects Apache HTTP Server 2.4 version 2.4.52 and prior versions. | ||||
| CVE-2022-26377 | 4 Apache, Fedoraproject, Netapp and 1 more | 6 Http Server, Fedora, Clustered Data Ontap and 3 more | 2025-05-01 | 7.5 High |
| Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.53 and prior versions. | ||||
| CVE-2022-28615 | 4 Apache, Fedoraproject, Netapp and 1 more | 6 Http Server, Fedora, Clustered Data Ontap and 3 more | 2025-05-01 | 9.1 Critical |
| Apache HTTP Server 2.4.53 and earlier may crash or disclose information due to a read beyond bounds in ap_strcmp_match() when provided with an extremely large input buffer. While no code distributed with the server can be coerced into such a call, third-party modules or lua scripts that use ap_strcmp_match() may hypothetically be affected. | ||||
| CVE-2022-30556 | 4 Apache, Fedoraproject, Netapp and 1 more | 5 Http Server, Fedora, Clustered Data Ontap and 2 more | 2025-05-01 | 7.5 High |
| Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that point past the end of the storage allocated for the buffer. | ||||
| CVE-2022-31813 | 4 Apache, Fedoraproject, Netapp and 1 more | 6 Http Server, Fedora, Clustered Data Ontap and 3 more | 2025-05-01 | 9.8 Critical |
| Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application. | ||||
| CVE-2023-27522 | 4 Apache, Debian, Redhat and 1 more | 6 Http Server, Debian Linux, Enterprise Linux and 3 more | 2025-05-01 | 7.5 High |
| HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client. | ||||
| CVE-2017-9798 | 3 Apache, Debian, Redhat | 8 Http Server, Debian Linux, Enterprise Linux and 5 more | 2025-04-20 | 7.5 High |
| Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c. | ||||
| CVE-2016-0736 | 2 Apache, Redhat | 4 Http Server, Enterprise Linux, Jboss Core Services and 1 more | 2025-04-20 | N/A |
| In Apache HTTP Server versions 2.4.0 to 2.4.23, mod_session_crypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC. | ||||
| CVE-2017-7668 | 6 Apache, Apple, Debian and 3 more | 16 Http Server, Mac Os X, Debian Linux and 13 more | 2025-04-20 | 7.5 High |
| The HTTP strict parsing changes added in Apache httpd 2.2.32 and 2.4.24 introduced a bug in token list parsing, which allows ap_find_token() to search past the end of its input string. By maliciously crafting a sequence of request headers, an attacker may be able to cause a segmentation fault, or to force ap_find_token() to return an incorrect value. | ||||
| CVE-2017-7659 | 2 Apache, Redhat | 2 Http Server, Rhel Software Collections | 2025-04-20 | N/A |
| A maliciously constructed HTTP/2 request could cause mod_http2 in Apache HTTP Server 2.4.24, 2.4.25 to dereference a NULL pointer and crash the server process. | ||||
| CVE-2017-9788 | 6 Apache, Apple, Debian and 3 more | 18 Http Server, Mac Os X, Debian Linux and 15 more | 2025-04-20 | N/A |
| In Apache httpd before 2.2.34 and 2.4.x before 2.4.27, the value placeholder in [Proxy-]Authorization headers of type 'Digest' was not initialized or reset before or between successive key=value assignments by mod_auth_digest. Providing an initial key with no '=' assignment could reflect the stale value of uninitialized pool memory used by the prior request, leading to leakage of potentially confidential information, and a segfault in other cases resulting in denial of service. | ||||
| CVE-2016-2161 | 2 Apache, Redhat | 4 Http Server, Enterprise Linux, Jboss Core Services and 1 more | 2025-04-20 | N/A |
| In Apache HTTP Server versions 2.4.0 to 2.4.23, malicious input to mod_auth_digest can cause the server to crash, and each instance continues to crash even for subsequently valid requests. | ||||