---
id: CVE-2026-93546
title: >-
  Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an
  authenticated WebDAV client with write access to crash worker processes and
  persistently corrupt a directory's property database via PROPPATCH requests
  declari…
summary: >-
  Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an
  authenticated WebDAV client with write access to crash worker processes and
  persistently corrupt a directory's property database via PROPPATCH requests
  declari…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-190
vendor: Apache Software Foundation
product: Apache HTTP Server
affected:
  - apache_http_server <= 2.4.68
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T20:30:25.943'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93546'
references:
  - url: 'https://httpd.apache.org/security/vulnerabilities_24.html'
    label: security@apache.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-01T19:38:29.562581Z'
ingestedAt: '2026-10-01T18:55:42.366Z'
---

## Overview

Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.