CVE-2026-34356

HIGH EPSS 47.8%
Published Jun 8, 20263w ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jun 8, 2026 3w ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
47.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-122

Affected Products 1

VendorProductVersionRange
apachehttp_server*≥2.4.0  –  <2.4.68

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.