ConfigServer Security & Firewall (CSF) 16.31-1

Targeted Security Release For a full list of changes, read the ConfigServer Security & Firewall (CSF) change log.

High 2026-09-03

cPanel CSF

Affected Versions

16.31-1

Targeted Security Release For a full list of changes, read the ConfigServer Security & Firewall (CSF) change log.

How to Apply the Fix

Update the affected packages on your server to the patched release, then restart the relevant services.

sudo /scripts/upcp --force

References

Security Advisories

Security: Privilege Escalation via Phusion Passenger’s Watchdog API

2026-09-08

Security: GCVE-25-2026-07-45-3 Exim .forward Privilege Escalation

2026-09-08

Security: CVE-2026-58048 Database Privilege Escalation

2026-09-08

Select your product and operating system to see the exact fix commands that apply to you.