Advisory severityHigh7.5Apache Software Foundation

High [CVE-2026-63292] Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default

This high-severity Apache Software Foundation advisory covers CVE-2026-63292; related products: Apache HTTP Server.

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

CVE-2026-63292 Source published Oct 1, 2026Source updated Oct 1, 2026

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

CVE-2026-63292

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Summary

Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.

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

Affected versions

through 2.4.68

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-2026-63292 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-63292NVD 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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