Out-of-bounds read in Apache HTTP Server - CVE-2026-34032
Published: May 4, 2026
Vulnerability identifier: #VU129541
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34032
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
Apache HTTP Server
Apache HTTP Server
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper null termination leading to an out-of-bounds read in mod_proxy_ajp ajp_msg_get_string when parsing AJP string data. A remote attacker can send a specially crafted AJP message to disclose sensitive information.
Exploitation requires Apache HTTP Server to connect to an untrusted or compromised AJP backend server.
How to mitigate CVE-2026-34032
Install security update from vendor's website.