CVE-2026-42528
Received Received - Intake

Memory Corruption in Apache httpd mod_dav

Publication date: 2026-10-01

Last updated on: 2026-10-01

Assigner: Apache Software Foundation

Description
A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version 2.4.69, which fixes this issue

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Meta Information

Published
2026-10-01
Last Modified
2026-10-01
Generated
2026-10-01
AI Q&A
2026-10-01
EPSS Evaluated
N/A
NVD
CVE-2026-42528
EUVD
EUVD-2026-90885

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
apache httpd to 2.4.69 (exc)
apache httpd 2.4.69
apache httpd to 2.4.69 (inc)
apache httpd to 2.4.67 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-789 The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

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Executive Summary

This vulnerability is a memory calculation bug in the mod_dav module of Apache httpd versions 2.4.67 and earlier. It allows an attacker with permission to create WebDAV locks to crash server child processes.

Detection Guidance

This vulnerability can be detected by checking the Apache httpd version. If your system is running version 2.4.67 or earlier, it may be vulnerable. Use commands like 'httpd -v' or 'apache2 -v' to check the installed version.

Impact Analysis

The impact includes potential denial of service where server processes crash, leading to service disruption for users relying on the web server.

Compliance Impact

This vulnerability causes server crashes but does not directly impact data confidentiality, integrity, or availability in a way that would violate GDPR or HIPAA. However, repeated crashes could lead to service disruptions affecting compliance with uptime requirements in these regulations.

Mitigation Strategies

Upgrade Apache httpd to version 2.4.69 or later to fix the memory calculation bug in mod_dav.

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