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.

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

Database specific

{
    "cna_assigner": "apache",
    "cwe_ids": [
        "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63292.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "2.4.0"
                        },
                        {
                            "last_affected": "2.4.68"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/apache/httpd

Affected ranges

Type

GIT

Repo

https://github.com/apache/httpd

Events

Introduced

da5873e80d6eee7a0838793bf68f1d0254745fbb

Fixed

1e06e9860794ce39605b79a0a787abfe084e5677

Database specific

Show details

{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "2.4.0"
                },
                {
                    "fixed": "2.4.69"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63292.json"