High [CVE-2026-28780] Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow
This high-severity Red Hat Linux advisory covers CVE-2026-28780 affecting JBoss Core Services for RHEL 8, JBoss Core Services on RHEL 7, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support.
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Summary
Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow. Red Hat rates this important (CVSS 8.1).
Weakness: CWE-787. Affected package(s): httpd, httpd:2.4, jbcs-httpd24-httpd.
Resolved in Red Hat advisory RHSA-2026:27200 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: JBoss Core Services for RHEL 8; JBoss Core Services on RHEL 7; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 8 more.
- httpd-0:2.4.62-13.el9_8.1
- httpd:2.4-8100020260519200905.489197e6
- jbcs-httpd24-httpd-0:2.4.62-13.el8jbcs
- httpd-0:2.4.63-13.el10_2.1
- jbcs-httpd24-httpd-0:2.4.62-13.el7jbcs
- httpd
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:27200
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:27200 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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