本頁列出影響 apache http_server 的已公開 CVE 漏洞（透過 NVD CPE 關聯）。每列包含嚴重程度評分、摘要與發布日期，便於識別與分析安全議題。
| CVE | 摘要 | 來源 | 最高 CVSS | EPSS % | 公開時間 | 更新時間 |
|---|---|---|---|---|---|---|
| CVE-2021-36160 | 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). | [email protected] | 7.5 | 62.89% | 2021-09-16 | 2026-06-16 |
| CVE-2021-34798 | Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier. | [email protected] | 7.5 | 64.51% | 2021-09-16 | 2026-06-16 |
| CVE-2021-33193 | 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. | [email protected] | 7.5 | 46.18% | 2021-08-16 | 2026-06-16 |
| CVE-2021-31618 | Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected. This rejection response was not fully initialised in the HTTP/2 protocol handler if the offending header was the very first one received or appeared in a a footer. This led | [email protected] | 7.5 | 51.21% | 2021-06-15 | 2026-06-16 |
| CVE-2021-30641 | Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF' | [email protected] | 5.3 | 52.33% | 2021-06-10 | 2026-06-16 |
| CVE-2021-26691 | In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow | [email protected] | 9.8 | 68.07% | 2021-06-10 | 2026-06-16 |
| CVE-2021-26690 | Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service | [email protected] | 7.5 | 65.07% | 2021-06-10 | 2026-06-16 |
| CVE-2020-35452 | Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow | [email protected] | 7.3 | 53.19% | 2021-06-10 | 2026-06-16 |
| CVE-2020-13950 | Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service | [email protected] | 7.5 | 49.09% | 2021-06-10 | 2026-06-16 |
| CVE-2020-13938 | Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows | [email protected] | 5.5 | 11.77% | 2021-06-10 | 2026-06-16 |
| CVE-2019-17567 | Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured. | [email protected] | 5.3 | 60.27% | 2021-06-10 | 2026-06-16 |
| CVE-2020-9490 | Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers. | [email protected] | 7.5 | 89.74% | 2020-08-07 | 2026-06-16 |
| CVE-2020-11993 | 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. | [email protected] | 7.5 | 58.72% | 2020-08-07 | 2026-06-16 |
| CVE-2020-11985 | IP address spoofing when proxying using mod_remoteip and mod_rewrite For configurations using proxying with mod_remoteip and certain mod_rewrite rules, an attacker could spoof their IP address for logging and PHP scripts. Note this issue was fixed in Apache HTTP Server 2.4.24 but was retrospectively allocated a low severity CVE in 2020. | [email protected] | 5.3 | 6.81% | 2020-08-07 | 2026-06-16 |
| CVE-2020-11984 | Apache HTTP server 2.4.32 to 2.4.44 mod_proxy_uwsgi info disclosure and possible RCE | [email protected] | 9.8 | 90.04% | 2020-08-07 | 2026-06-16 |
| CVE-2020-1927 | In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL. | [email protected] | 6.1 | 56.69% | 2020-04-01 | 2026-06-16 |
| CVE-2020-1934 | In Apache HTTP Server 2.4.0 to 2.4.41, mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server. | [email protected] | 5.3 | 51.95% | 2020-04-01 | 2026-06-16 |
| CVE-2019-10097 | In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients. | [email protected] | 7.2 | 52.87% | 2019-09-26 | 2026-06-16 |
| CVE-2019-10092 | In Apache HTTP Server 2.4.0-2.4.39, a limited cross-site scripting issue was reported affecting the mod_proxy error page. An attacker could cause the link on the error page to be malformed and instead point to a page of their choice. This would only be exploitable where a server was set up with proxying enabled but was misconfigured in such a way that the Proxy Error page was displayed. | [email protected] | 6.1 | 81.47% | 2019-09-26 | 2026-06-16 |
| CVE-2019-10082 | In Apache HTTP Server 2.4.18-2.4.39, using fuzzed network input, the http/2 session handling could be made to read memory after being freed, during connection shutdown. | [email protected] | 9.1 | 16.55% | 2019-09-26 | 2026-06-16 |