CVE-2026-42536

Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content 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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

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/2026/06/08/9	Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:25042
https://access.redhat.com/errata/RHSA-2026:34109
https://access.redhat.com/errata/RHSA-2026:41906
https://access.redhat.com/errata/RHSA-2026:42828
https://access.redhat.com/errata/RHSA-2026:47046
https://access.redhat.com/errata/RHSA-2026:53371
https://access.redhat.com/errata/RHSA-2026:56868
https://access.redhat.com/errata/RHSA-2026:56869
https://access.redhat.com/errata/RHSA-2026:62165
https://access.redhat.com/errata/RHSA-2026:66323
https://access.redhat.com/errata/RHSA-2026:67152
https://access.redhat.com/security/cve/CVE-2026-42536
https://bugzilla.redhat.com/show_bug.cgi?id=2486411
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42536.json

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-06-08 16:16

Updated : 2026-09-14 13:18

NVD link : CVE-2026-42536

Mitre link : CVE-2026-42536

CVE.ORG link : CVE-2026-42536

JSON object : View

Products Affected

apache

http_server

CWE

CWE-122

Heap-based Buffer Overflow

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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