CVE-2026-28780
Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 6, 2026
Updated · October 30, 2026
Description
A flaw was found in mod_proxy_ajp of Apache HTTP Server. This heap-based buffer overflow vulnerability allows a remote attacker, by connecting to a malicious AJP (Apache JServ Protocol) server, to send a specially crafted message. This message can cause mod_proxy_ajp to write attacker-controlled data beyond a heap-based buffer, potentially leading to arbitrary code execution or a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-787 · Out-of-bounds Write