Bug 2466913 (CVE-2026-28780) - CVE-2026-28780 Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow
Summary: CVE-2026-28780 Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_prox...
Keywords:
Status: NEW
Alias: CVE-2026-28780
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2466956
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-05 22:01 UTC by OSIDB Bzimport
Modified: 2026-05-06 06:11 UTC (History)
8 users (show)

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2026-05-05 22:01:35 UTC 
Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server.
If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.
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