SECURITY: CVE-2026-34059: Apache HTTP Server: mod_proxy_ajp:
Heap Over-Read and memory disclosure in ajp_parse_data()
(cve.mitre.org)
Buffer Over-read vulnerability in Apache HTTP Server.
This issue affects Apache HTTP Server: through 2.4.66.
Credits: Elhanan Haenel
*) SECURITY: CVE-2026-34032: Apache HTTP Server: mod_proxy_ajp:
Heap Buffer Over-Read Due to Missing Null-Termination Check
(ajp_msg_get_string) (cve.mitre.org)
Improper Null Termination, Out-of-bounds Read vulnerability in
Apache HTTP Server.
This issue affects Apache HTTP Server: through 2.4.66.
Credits: Tianshuo Han ( This email address is being protected from spambots. You need JavaScript enabled to view it.
*) SECURITY: CVE-2026-33857: Apache HTTP Server: Off-by-one OOB
reads in AJP getter functions (cve.mitre.org)
Out-of-bounds Read vulnerability in mod_proxy_ajp of
Apache HTTP Server.
This issue affects Apache HTTP Server: through 2.4.66.
Credits: Elhanan Haenel
*) SECURITY: CVE-2026-33523: Apache HTTP Server: multiple modules:
HTTP response splitting forwarding malicious status line
(cve.mitre.org)
HTTP response splitting vulnerability in multiple Apache HTTP
Server modules with untrusted or compromised backend servers.
This issue affects Apache HTTP Server: from through 2.4.66.
Credits: Haruki Oyama (Waseda University)
*) SECURITY: CVE-2026-33007: Apache HTTP Server: mod_authn_socache
crash (cve.mitre.org)
A NULL pointer dereference in the mod_authn_socache in Apache
HTTP Server 2.4.66 and earlier allows an unauthenticated remote
user to crash a child process in a caching forward proxy
configuration.
Credits: Pavel Kohout, Aisle Research, Aisle.com
*) SECURITY: CVE-2026-33006: Apache HTTP Server: mod_auth_digest
timing attack (cve.mitre.org)
A timing attack against mod_auth_digest in Apache HTTP Server
2.4.66 allows a bypass of Digest authentication by a remote
attacker.
Credits: Nitescu Lucian
*) SECURITY: CVE-2026-29169: Apache HTTP Server: mod_dav_lock
indirect lock crash (cve.mitre.org)
A NULL pointer dereference in mod_dav_lock in Apache HTTP Server
2.4.66 and earlier may allow an attacker to crash the server
with a malicious request.mod_dav_lock is not used internally by
mod_dav or mod_dav_fs.
The only known use-case for mod_dav_lock was mod_dav_svn from
Apache Subversion earlier than version 1.2.0.
Users are recommended to upgrade to version 2.4.67, which fixes
this issue, or remove mod_dav_lock.
Credits: Pavel Kohout, Aisle Research, Aisle.com
*) SECURITY: CVE-2026-29168: Apache HTTP Server: mod_md
unrestricted OCSP response (cve.mitre.org)
Allocation of Resources Without Limits or Throttling
vulnerability in Apache HTTP Server's mod_md via OCSP response
data.
This issue affects Apache HTTP Server: from 2.4.30 through
2.4.66.
Credits: Pavel Kohout, Aisle Research, Aisle.com
*) SECURITY: CVE-2026-28780: Apache HTTP Server: buffer overflow in
mod_proxy_ajp via ajp_msg_check_header() (cve.mitre.org)
Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of
Apache HTTP Server.
If mod_proxy_ajp connects to a malicious AJP server this AJP
server can send a malicious AJP message back to mod_proxy_ajp
and cause it to write 4 attacker controlled bytes after the end
of a heap based buffer.
This issue affects Apache HTTP Server: through 2.4.66.
Credits: Andrew Lacambra
*) SECURITY: CVE-2026-24072: Apache HTTP Server: mod_rewrite
elevation of privileges via ap_expr (cve.mitre.org)
An escalation of privilege bug in various modules in Apache HTTP
2.4.66 and earlier allows local .htaccess authors to read files
with the privileges of the httpd user.
Credits: y7syeu
*) SECURITY: CVE-2026-23918: Apache HTTP Server: http2: double free
and possible RCE on early reset (cve.mitre.org)
Double Free and possible RCE vulnerability in Apache HTTP Server
with the HTTP/2 protocol.
This issue affects Apache HTTP Server: 2.4.66.
Credits: Bartlomiej Dmitruk, striga.ai
