CVE-2026-34356

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-34356
Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie* This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/08/7 Mailing List
Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
History

09 Jun 2026, 16:17

Type Values Removed Values Added
References () https://httpd.apache.org/security/vulnerabilities_24.html - () https://httpd.apache.org/security/vulnerabilities_24.html - Vendor Advisory
References () http://www.openwall.com/lists/oss-security/2026/06/08/7 - () http://www.openwall.com/lists/oss-security/2026/06/08/7 - Mailing List
First Time Apache http Server
Apache
CPE cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

08 Jun 2026, 23:17

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2026/06/08/7 -

08 Jun 2026, 19:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5

08 Jun 2026, 16:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-06-08 16:16

Updated : 2026-06-09 16:17

NVD link : CVE-2026-34356

Mitre link : CVE-2026-34356

CVE.ORG link : CVE-2026-34356

JSON object : View

Products Affected

apache

  • http_server
CWE
CWE-122

Heap-based Buffer Overflow