Apache HTTP Server: mod_dav_fs namespace overflow
Summary
| CVE | CVE-2026-93546 |
|---|---|
| State | PUBLISHED |
| Assigner | apache |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-01 17:17:33 UTC |
| Updated | 2026-10-01 17:17:33 UTC |
| Description | 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. |
Risk And Classification
Problem Types: CWE-190 | CWE-190 CWE-190 Integer overflow or wraparound
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Apache Software Foundation | Apache HTTP Server | affected 2.4.68 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| httpd.apache.org/security/vulnerabilities_24.html | [email protected] | httpd.apache.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Zhen Kong (en)
CNA: Calif.io in collaboration with Anthropic (en)
CNA: AISLE in partnership with Red Hat (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-07-28T12:00:00.000Z | reported |
| CNA | 2026-10-01T12:00:00.000Z | fixed in 2.4.x by r1938682 |
| CNA | 2026-10-01T12:00:00.000Z | 2.4.69 released |
There are currently no legacy QID mappings associated with this CVE.