CVE-2026-34355

HIGH EPSS 42.6%

Published Jun 8, 20263w ago · Modified Jun 17, 20262w ago

7.5 CVSS 3.1

High

Published Jun 8, 2026 3w ago

Last Modified Jun 17, 2026 2w ago

Description

A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this 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

42.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-122

Affected Products 1

Vendor	Product	Version	Range
apache	http_server	*	≥2.4.0 – <2.4.68

References 2

openwall.com http://www.openwall.com/lists/oss-security/2026/06/08/6

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.