CVE-2026-63292
Public on 2026-10-01
Modified on 2026-10-03
Description
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.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | httpd | 2026-10-12 | ALAS2-2026-3990 | Fixed |
| Amazon Linux 2023 | httpd | 2026-10-12 | ALAS2023-2026-3202 | Fixed |
| Amazon Linux 2027 Preview | httpd | 2026-10-12 | ALAS2027-2026-207 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |