Important Security Patch and Server Optimization Update (June 5, 2026)
Friday, June 5, 2026
Hello,
We have completed and prepared the latest round of critical server security, stability, and optimization updates. This update includes the following items:
1. HTTP/2 BOMB Security Patch
Applied the latest mitigation and update related to the HTTP/2 BOMB exploit reported on June 3, 2026.
Reference: https://www.securityweek.com/http-2-bomb-exploit-knocks-web-servers-offline-in-seconds/
2. Final Kernel Security Patch Update — 2nd Wave
Applied the latest kernel-level security updates covering DirtyDecrypt, CopyFail, DirtyFrag, and Fragnesia.
3. cPanel 2FA Security Fix
Updated cPanel & WHM to address the 2FA security issue released under version v136.0.19 on June 2, 2026.
4. LiteSpeed cPanel Plugin Security Patch — 2nd Wave
Applied the final LiteSpeed security patch and updated the latest LiteSpeed plugin for cPanel & WHM.
Reference: https://support.cpanel.net/hc/en-us/articles/40868195661207-Security-LiteSpeed-cPanel-Plugin-May-31-2026
5. ClamAV Security Patch
Applied the required ClamAV security patch where ClamAV is enabled on the server.
Reference: https://support.cpanel.net/hc/en-us/articles/12509292089111-ClamAV-CVE-patches-for-versions-0-103-8-0-105-2-and-101
6. Internal Fixes and Improvements
The following internal improvements and maintenance tasks have also been completed or prepared:
- cPanel memory execution improvements
- Backup failure fixes
- RAID1 stability fixes
- Operating system component updates
- Kernel update
- MariaDB core update preparation for v11.8
7. Final Cleanup for Remaining cPanel WP2 Security Items
Completed the final cleanup and mitigation steps for any remaining affected components related to the cPanel & WHM WP2 security update.
Reference: https://support.cpanel.net/hc/en-us/articles/40073787579671-Security-CVE-2026-41940-cPanel-WHM-WP2-Security-Update-04-28-2026
All updates are focused on improving server security, stability, performance, and protection against the latest known vulnerabilities.
Regards,
Zelt Technologies Limited | Sister Concern HOSTSEO LTD.
