CVE-2026-42536: CWE-122 Heap-based Buffer Overflow in Apache Software Foundation Apache HTTP Server
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.
AI Analysis
Technical Summary
This vulnerability is a heap-based buffer overflow in the Apache HTTP Server's mod_xml2enc module, related to the xml2StartParse function handling untrusted XML content. It affects all versions from 2.4.0 up to and including 2.4.67. The flaw could potentially lead to memory corruption. The Apache Software Foundation has released version 2.4.68 to fix this issue.
Potential Impact
The vulnerability could allow an attacker to cause memory corruption via a heap-based buffer overflow when processing specially crafted XML content. This may lead to application crashes or potentially enable code execution, depending on the context. However, no known exploits in the wild have been reported at this time.
Mitigation Recommendations
Users should upgrade Apache HTTP Server to version 2.4.68, which contains the official fix for this vulnerability. No other mitigation steps are indicated by the vendor advisory. Patch status is confirmed by the vendor's recommendation to upgrade.
CVE-2026-42536: CWE-122 Heap-based Buffer Overflow in Apache Software Foundation Apache HTTP Server
Description
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 v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-based buffer overflow in the Apache HTTP Server's mod_xml2enc module, related to the xml2StartParse function handling untrusted XML content. It affects all versions from 2.4.0 up to and including 2.4.67. The flaw could potentially lead to memory corruption. The Apache Software Foundation has released version 2.4.68 to fix this issue.
Potential Impact
The vulnerability could allow an attacker to cause memory corruption via a heap-based buffer overflow when processing specially crafted XML content. This may lead to application crashes or potentially enable code execution, depending on the context. However, no known exploits in the wild have been reported at this time.
Mitigation Recommendations
Users should upgrade Apache HTTP Server to version 2.4.68, which contains the official fix for this vulnerability. No other mitigation steps are indicated by the vendor advisory. Patch status is confirmed by the vendor's recommendation to upgrade.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-04-28T16:06:25.760Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a26e463e29bf47b501e0dbb
Added to database: 6/8/2026, 3:48:51 PM
Last enriched: 6/8/2026, 4:06:16 PM
Last updated: 6/9/2026, 4:58:31 AM
Views: 3
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