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Vulnerabilities

Apache HTTP Server

Ranked by severity, then by exploit likelihood, unless you sort otherwise. Click a CVE ID for its full record.

371CVEs
CVE-2011-2688
SQL injection vulnerability in mysql/mysql-auth.pl in the mod_authnz_external module 3.2.5 and earlier for the Apache HTTP Server allows remote attackers to execute arbitrary SQL commands via the user field.
Published 2011-07-28 · Modified
7.5EPSS 0.057
CVE-2003-0987
mod_digest for Apache before 1.3.31 does not properly verify the nonce of a client response by using a AuthNonce secret.
Published 2004-02-03 · Modified
7.5EPSS 0.056
CVE-2022-30556
Information Disclosure in mod_lua with websockets
Published 2022-06-08 · Analyzed
7.5EPSS 0.054
CVE-2025-53020
Apache HTTP Server: HTTP/2 DoS by Memory Increase
Published 2025-07-10 · Modified
7.5EPSS 0.050
CVE-2002-0257
Cross-site scripting vulnerability in auction.pl of MakeBid Auction Deluxe 3.30 allows remote attackers to obtain information from other users via the form fields (1) TITLE, (2) DESCTIT, (3) DESC, (4) searchstring, (5) ALIAS, (6) EMAIL, (7) ADDRESS1, (8) ADDRESS2, (9) ADDRESS3, (10) PHONE1, (11) PHONE2, (12) PHONE3, or (13) PHONE4.
Published 2002-05-03 · Modified
7.5EPSS 0.040
CVE-2006-20001
Apache HTTP Server: mod_dav out of bounds read, or write of zero byte
Published 2023-01-17 · Modified
7.5EPSS 0.036
CVE-1999-0071
Apache httpd cookie buffer overflow for versions 1.1.1 and earlier.
Published 1999-09-29 · Modified
7.5EPSS 0.036
CVE-2024-38477
Apache HTTP Server: Crash resulting in Denial of Service in mod_proxy via a malicious request
Published 2024-07-01 · Modified
7.5EPSS 0.032
CVE-2023-31122
Apache HTTP Server: mod_macro buffer over-read
Published 2023-10-23 · Analyzed
7.5EPSS 0.030
CVE-2021-32785
Format string bug in the Redis cache implementation
Published 2021-07-22 · Modified
7.5EPSS 0.027
CVE-2023-27522
Apache HTTP Server: mod_proxy_uwsgi HTTP response splitting
Published 2023-03-07 · Analyzed
7.5EPSS 0.021
CVE-2008-2384
SQL injection vulnerability in mod_auth_mysql.c in the mod-auth-mysql (aka libapache2-mod-auth-mysql) module for the Apache HTTP Server 2.x, when configured to use a multibyte character set that allows a \ (backslash) as part of the character encoding, allows remote attackers to execute arbitrary SQL commands via unspecified inputs in a login request.
Published 2009-01-22 · Modified
7.5EPSS 0.019
CVE-2025-3891
Mod_auth_openidc: dos via empty post in mod_auth_openidc with oidcpreservepost enabled
Published 2025-04-29 · Modified
7.5EPSS 0.016
CVE-2013-5697
SQL injection vulnerability in mod_accounting.c in the mod_accounting module 0.5 and earlier for Apache allows remote attackers to execute arbitrary SQL commands via a Host header.
Published 2013-09-30 · Modified
7.51 PoCEPSS 0.014
CVE-2025-49630
Apache HTTP Server: mod_proxy_http2 denial of service
Published 2025-07-10 · Modified
7.5EPSS 0.014
CVE-2024-43394
Apache HTTP Server: SSRF on Windows due to UNC paths
Published 2025-07-10 · Modified
7.5EPSS 0.013
CVE-2026-34355
Apache HTTP Server: mod_proxy_html buffer overflow
Published 2026-06-08 · Modified
7.5EPSS 0.012
CVE-2026-42536
Apache HTTP Server: mod_xml2enc heap overflow
Published 2026-06-08 · Modified
7.5EPSS 0.010
CVE-2026-63292
Apache HTTP Server: mod_vhost_alias stack overflow
Published 2026-10-01 · Analyzed
7.5EPSS 0.009
CVE-2024-43204
Apache HTTP Server: SSRF with mod_headers setting Content-Type header
Published 2025-07-10 · Modified
7.5EPSS 0.009
CVE-2025-59775
Apache HTTP Server: NTLM Leakage on Windows through UNC SSRF
Published 2025-12-05 · Analyzed
7.5EPSS 0.009
CVE-2024-42516
Apache HTTP Server: HTTP response splitting
Published 2025-07-10 · Modified
7.5EPSS 0.008
CVE-2024-47252
Apache HTTP Server: mod_ssl error log variable escaping
Published 2025-07-10 · Modified
7.5EPSS 0.008
CVE-2026-34356
Apache HTTP Server: ProxyPassReverseCookieMap buffer overflow
Published 2026-06-08 · Analyzed
7.5EPSS 0.007
CVE-2026-29169
Apache HTTP Server: mod_dav_lock indirect lock crash
Published 2026-05-04 · Modified
7.5EPSS 0.006
CVE-2026-56449
Apache HTTP Server: mod_proxy_html: crash in dump_content
Published 2026-10-01 · Modified
7.5EPSS 0.006
CVE-2026-48005
Apache HTTP Server: mod_auth_digest reauthentication attack
Published 2026-10-01 · Analyzed
7.5EPSS 0.006
CVE-2025-55753
Apache HTTP Server: mod_md (ACME), unintended retry intervals
Published 2025-12-05 · Analyzed
7.5EPSS 0.005
CVE-2026-56153
Apache HTTP Server: mod_charset_lite: Heap overflow in finish_partial_char
Published 2026-10-01 · Analyzed
7.5EPSS 0.005
CVE-2026-59685
Apache HTTP Server: Out-of-Bounds Write in ap_directory_walk() Canonical-Name Rewrite on CASE_BLIND_FILESYSTEM
Published 2026-10-01 · Analyzed
7.5EPSS 0.005
CVE-2026-63686
Apache HTTP Server: mod_xml2enc crash on charset conversion failure
Published 2026-10-01 · Analyzed
7.5EPSS 0.005
CVE-2026-46729
Apache HTTP Server: mod_heartmonitor denial of service
Published 2026-10-01 · Analyzed
7.5EPSS 0.005
CVE-2026-63045
Apache HTTP Server: mod_proxy_ftp PASV address handling
Published 2026-10-01 · Analyzed
7.5EPSS 0.004
CVE-2026-63718
Apache HTTP Server: mod_proxy_uwsgi Transfer-Encoding response smuggling
Published 2026-10-01 · Analyzed
7.5EPSS 0.004
CVE-2026-34059
Apache HTTP Server: mod_proxy_ajp: Heap Over-Read and memory disclosure in ajp_parse_data()
Published 2026-05-04 · Analyzed
7.5EPSS 0.004
CVE-2026-47360
Apache HTTP Server: mod_session: Session cookie not removed during internal redirect
Published 2026-10-01 · Analyzed
7.5EPSS 0.004
CVE-2025-49812
Apache HTTP Server: mod_ssl TLS upgrade attack
Published 2025-07-10 · Modified
7.4EPSS 0.007
CVE-2020-35452
mod_auth_digest possible stack overflow by one nul byte
Published 2021-06-10 · Modified
7.3EPSS 0.532
CVE-2023-38709
Apache HTTP Server: HTTP response splitting
Published 2024-04-04 · Modified
7.3EPSS 0.039
CVE-2026-44185
Apache HTTP Server: Stack Buffer Over-Read in mod_ssl OCSP `send_request`
Published 2026-06-08 · Modified
7.3EPSS 0.007
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