What's New

LiteSpeed Update to 6.3.7

Update

LiteSpeed Web Server updated to version 6.3.7 (Build 0), released on September 11, 2026.

Security

  • Improved authentication and request validation for lscgid.

  • Stricter validation of the internal redirect URL.

  • Prevented important internal environment variables from being set from .htaccess.

What's New

  • Enabled key exchange with post-quantum cryptography.

Improvements

  • Support for the MKCALENDAR request method.

Fixes

  • Fixed a race condition edge case in the ModSecurity engine.

  • Fixed an edge case in the internal URL cache.

  • Improved Node.js process management to prevent persistent idle workers.

  • Fixed a timeout issue with idle HTTP/3 connections.

  • Fixed a namespace issue in natively configured vhosts.

  • Fixed an edge case in SHM locking.