Advisory severityMedium4.3Apache Software Foundation

Medium [CVE-2026-42528] 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

This medium-severity Apache Software Foundation advisory covers CVE-2026-42528; related products: Apache HTTP Server.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-42528 Source published Oct 1, 2026Source updated Oct 1, 2026

VulniPulse record published Oct 1, 2026Record updated Oct 1, 2026

CVE-2026-42528

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Summary

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

Affected product named by the advisory: Apache HTTP Server.

Affected versions

2.4.67

Official advisory · high-confidence parse· fetched 4 days ago·verify at source

Fixed versions

2.4.69

Official advisory · high-confidence parse· fetched 4 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 2.4.69, which fixes this issue

Official advisory · high-confidence parse· fetched 4 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-42528 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-42528NVD CVE.org MITRE

Official resources

Apache HTTP Server 2.4 vulnerabilities (official fixed-in table) (target: 2.4.69)
Official documentation
This advisory names 2.4.69 as the first fixed release — official upgrade documentation for Apache HTTP Server 2.4 vulnerabilities (official fixed-in table).
ASF Security — reporting & CVE process
Official documentation
The Apache Software Foundation's official security page: how ASF CVEs are published and where each project's advisories live.
Apache project downloads (fixed releases)
Official documentation
Official ASF download tree — fetch the fixed release named in this advisory from the project's directory.

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