Vulnerability Report

CVE-2026-42536

Title: Heap-based Buffer Overflow in Apache HTTP Server with mod_xml2enc

Memory Corruption

Proof Of Concept

PoC Available for CVE-2026-42536

CWE Category CWE-122

Published Date Jun 08, 2026

Modified Date Sep 14, 2026

Exploit Status Available

Score 7.5 CVSS v

Exploit Probability (EPSS)

2.69%

Vulnerability Summary

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.

Impacted Vendors

Reference Links

https://httpd.apache.org/security/vulnerabilities_24.html

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1

Source Entity 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-42536 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/erberkan/CVE-2026-42536-PoC

View Code

September 14, 2026 MODIFIED

Vulnerability data updated via NVD.

September 10, 2026 MODIFIED

Vulnerability data updated via NVD.

September 02, 2026 MODIFIED

Vulnerability data updated via NVD.

August 27, 2026 MODIFIED

Vulnerability data updated via NVD.

August 11, 2026 MODIFIED

Vulnerability data updated via NVD.

August 10, 2026 MODIFIED

Vulnerability data updated via NVD.

July 28, 2026 MODIFIED

Vulnerability data updated via NVD.

July 23, 2026 MODIFIED

Vulnerability data updated via NVD.

July 22, 2026 MODIFIED

Vulnerability data updated via NVD.

July 20, 2026 MODIFIED

Vulnerability data updated via NVD.

July 16, 2026 MODIFIED

Vulnerability data updated via NVD.

July 15, 2026 MODIFIED

Vulnerability data updated via NVD.

July 02, 2026 MODIFIED

Vulnerability data updated via NVD.

June 30, 2026 MODIFIED

Vulnerability data updated via NVD.

June 09, 2026 MODIFIED

Vulnerability data updated via NVD.

June 09, 2026 MODIFIED

Vulnerability data updated via NVD.

June 09, 2026 MODIFIED

Vulnerability data updated via NVD.

June 08, 2026 MODIFIED

Vulnerability data updated via NVD.

June 08, 2026 MODIFIED

Vulnerability data updated via NVD.

June 08, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.