Vulnerability · Published Oct 1, 2026 · Assigned by apache
CVE-2026-63292Apache HTTP Server: mod_vhost_alias stack overflow
High 7.5
In plain English
A high-severity stack buffer overflow in Apache HTTP Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 38.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | httpd | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | httpd | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | httpd | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | httpd-core | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:9 | httpd-core | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | httpd-devel | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | httpd-devel | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | httpd-devel | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | httpd-filesystem | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | httpd-filesystem | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | httpd-filesystem | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | httpd-manual | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | httpd-manual | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | httpd-manual | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | httpd-tools | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | httpd-tools | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | httpd-tools | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:8 | mod_http2 | 1.15.7-10.module_el8.10.0+4233+8b7d9181.7 | ALSA-2026:92616 |
| AlmaLinux:8 | mod_http2 | 1.15.7-10.module_el8.10.0+4270+e5f13fdb.7 | ALSA-2026:92616 |
| AlmaLinux:10 | mod_ldap | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | mod_ldap | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | mod_ldap | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | mod_lua | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:9 | mod_lua | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:8 | mod_md | 1:2.0.8-8.module_el8.10.0+4295+280de5aa.4 | ALSA-2026:92616 |
| AlmaLinux:10 | mod_proxy_html | 1:2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | mod_proxy_html | 1:2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | mod_proxy_html | 1:2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | mod_session | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | mod_session | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | mod_session | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux:10 | mod_ssl | 1:2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux:8 | mod_ssl | 1:2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux:9 | mod_ssl | 1:2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| Alpine:v3.21 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-63292 |
| Alpine:v3.22 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-63292 |
| Alpine:v3.23 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-63292 |
| Alpine:v3.24 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-63292 |
| Debian:12 | apache2 | no fix listed | DEBIAN-CVE-2026-63292 |
| Debian:13 | apache2 | 2.4.69-1~deb13u1 | DEBIAN-CVE-2026-63292 |
| Debian:14 | apache2 | 2.4.69-1 | DEBIAN-CVE-2026-63292 |
| Rocky Linux:10 | httpd | 0:2.4.63-13.el10_2.8 | RLSA-2026:89860 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+1830+22f0c9e0 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+40197+0231e209.8 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+1842+4a9649e8.2 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+1938+3b7755d4.3 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+40206+be2c8a50.8 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+40257+286895ef.9 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+1984+1bed3124.4 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+40312+2c72bb9b.10 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+2061+8d03fdec.5 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+40402+af9563a3.13 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+40045+6ce8579b.6 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+40053+5a18018e.7 | RLSA-2026:92616 |
| Rocky Linux:8 | httpd | 0:2.4.37-65.module+el8.10.0+1840+b070a976.1 | RLSA-2026:92616 |
| Rocky Linux:9 | httpd | 0:2.4.62-13.el9_8.9 | RLSA-2026:88229 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+40257+286895ef.7 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+40204+716978aa.6 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+40197+0231e209.5 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+2061+8d03fdec.4 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+1938+3b7755d4.3 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+1883+38ed6c58.1 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+1830+22f0c9e0 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-10.module+el8.10.0+1775+6b057638 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_md | 1:2.0.8-8.module+el8.10.0+40053+5a18018e.2 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_md | 1:2.0.8-8.module+el8.9.0+1370+89cc8ad5 | RLSA-2026:92616 |
| Rocky Linux:8 | mod_md | 1:2.0.8-8.module+el8.10.0+40369+03c444c1.4 | RLSA-2026:92616 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.25 | USN-8931-1 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.25 | UBUNTU-CVE-2026-63292 |
| Ubuntu:24.04:LTS | apache2 | 2.4.58-1ubuntu8.17 | USN-8931-1 |
| Ubuntu:24.04:LTS | apache2 | 2.4.58-1ubuntu8.17 | UBUNTU-CVE-2026-63292 |
| Ubuntu:26.04:LTS | apache2 | 2.4.66-2ubuntu2.6 | UBUNTU-CVE-2026-63292 |
| Ubuntu:26.04:LTS | apache2 | 2.4.66-2ubuntu2.6 | USN-8931-1 |
| Ubuntu:26.10 | apache2 | no fix listed | UBUNTU-CVE-2026-63292 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.0 – through 2.4.68 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H