Bug 2545043 - CVE-2026-63292 httpd: httpd: Arbitrary code execution via oversized Host header in mod_vhost_alias [fedora-all]
Summary: CVE-2026-63292 httpd: httpd: Arbitrary code execution via oversized Host head...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: httpd
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Luboš Uhliarik
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["7cf9d371-ac8a-49f3-9cda-b...
Depends On:
Blocks: CVE-2026-63292
TreeView+ depends on / blocked
 
Reported: 2026-10-02 11:42 UTC by Vladimir Vasilev
Modified: 2026-10-02 11:42 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Vladimir Vasilev 2026-10-02 11:42:55 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.
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