CVE-2026-63292CWE-121

CVE-2026-63292

High · published October 1, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
58.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00876 · 58.6th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-01T21:17Z
Affected products (1)
ProductVersionsFixed in
apache/http_server≥ 2.4.0, < 2.4.692.4.69
References (2)
https://httpd.apache.org/security/vulnerabilities_24.html · [email protected]http://www.openwall.com/lists/oss-security/2026/10/01/24 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 03 OCT 03:45Z
    EPSS moved — → 1%
    epss
  • 01 OCT 16:11Z
    Apache HTTP Server: mod_vhost_alias stack overflow
    cvelistv5