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… (CVE-2026-93546)
An integer overflow vulnerability exists in mod_dav_fs of Apache HTTP Server versions through 2.4.68. This flaw allows an authenticated WebDAV client with write access to crash worker processes and cause persistent corruption of a directory's property database by sending PROPPATCH requests with many XML namespaces.
AI Analysis
Technical Summary
CVE-2026-93546 is an integer overflow vulnerability in the mod_dav_fs module of Apache HTTP Server versions up to 2.4.68. An authenticated WebDAV client with write permissions can exploit this by sending PROPPATCH requests that declare numerous XML namespaces, triggering an integer overflow that crashes worker processes and corrupts the directory's property database persistently.
Potential Impact
Successful exploitation results in denial of service through crashing of worker processes and persistent corruption of the directory property database, potentially affecting WebDAV functionality and data integrity for affected servers.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict WebDAV write access to trusted users and monitor for unusual PROPPATCH activity.
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… (CVE-2026-93546)
Description
An integer overflow vulnerability exists in mod_dav_fs of Apache HTTP Server versions through 2.4.68. This flaw allows an authenticated WebDAV client with write access to crash worker processes and cause persistent corruption of a directory's property database by sending PROPPATCH requests with many XML namespaces.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-93546 is an integer overflow vulnerability in the mod_dav_fs module of Apache HTTP Server versions up to 2.4.68. An authenticated WebDAV client with write permissions can exploit this by sending PROPPATCH requests that declare numerous XML namespaces, triggering an integer overflow that crashes worker processes and corrupts the directory's property database persistently.
Potential Impact
Successful exploitation results in denial of service through crashing of worker processes and persistent corruption of the directory property database, potentially affecting WebDAV functionality and data integrity for affected servers.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict WebDAV write access to trusted users and monitor for unusual PROPPATCH activity.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-x37v-wq26-vjw7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-93546"]
- State
- PUBLISHED
Threat ID: 6abeb3e3a43b0b3b89eceb58
Added to database: 10/01/2026, 19:26:27 UTC
Last enriched: 10/01/2026, 19:27:49 UTC
Last updated: 10/02/2026, 02:45:55 UTC
Views: 3
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