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CVE-2026-109163 json

Apache HTTP Server: mod_vhost_alias 1 byte stack buffer overwrite (after CVE-2026-63292)

published 19h ago modified 19h ago also EUVD-2026-123533

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no EPSS score yet
public exploits
0
none known

Summary

Stack-based buffer overflow vulnerability in Apache HTTP Server's mod_vhost_alias (after CVE-2026-63292)

This issue affects Apache HTTP Server: 2.4.69.

Patch / fix

  • apache2 Alpine 3.24 2.4.71-r0

alpine advisories ALPINE-CVE-2026-109163

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-109163 updated cvss 5.9

httpd: httpd: Denial of Service via stack-based buffer overflow in mod_vhost_alias

  • Red Hat Hardened Images httpd
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 6 httpd, mod_ssl, httpd-tools, httpd-manual Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more Red Hat Enterprise Linux 8 httpd, mod_md, mod_ssl, mod_ldap, mod_http2, httpd-tools, +4 more Red Hat Enterprise Linux 9 httpd, mod_lua, mod_ssl, mod_ldap, httpd-core, httpd-tools, +4 more Red Hat Enterprise Linux 10 httpd Red Hat JBoss Core Services jbcs-httpd24-httpd, jbcs-httpd24-mod_md, jbcs-httpd24-mod_ssl, jbcs-httpd24-mod_ldap, jbcs-httpd24-httpd-zip, jbcs-httpd24-httpd-libs, +6 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Affected products

  • Apache Software Foundation Apache HTTP Server

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.