The following notice applies to customers with services at either of our facilities (ATL1 & HOU1)

On October 23, 2026, beginning at approximately 5:00 AM CT and lasting for approximately 2 hours, our network operations team will be performing maintenance on the network at our ATL1 & HOU1 locations. During this time there may be brief periods of variable latency and/or packet loss.

If you have any questions, comments, or concerns regarding this maintenance, please feel free to submit a ticket and we will be more than happy to address those inquiries.

We would like to inform you that a security vulnerability affecting Plesk has been identified. Hotfix is now available. 

CVE-2026-109618 and CVE-2026-109619.

https://support.plesk.com/hc/en-us/articles/44397729587351-Vulnerability-CVE-2026-109618-and-CVE-2026-109619-Remote-code-execution-in-PHP-shipped-with-Plesk?utm_medium=email&_hsenc=p2ANqtz-8uVP5_lJhr1cd3rNw7W-S3-2vEH-1u3P8W-5hi2RPGawsDjlfN1csJYa44ZHN1W7w9aErWz53vThsn52ncmnxOy0X-9Q&_hsmi=445493464&utm_content=445493464&utm_source=hs_email

[5:31 PM]

The PHP project has released security updates on October 21, 2026. These updates fix two vulnerabilities in PHP both rated as Critical. Plesk includes or uses PHP, so these vulnerabilities can affect your Plesk installations.

These vulnerabilities are in PHP. They are not in the Plesk code.

These security vulnerabilities have been identified as:

• CVE-2026-109618
• CVE-2026-109619

Affected & Patched Product Versions

• PHP on Plesk Obsidian for Linux:

ProductAffected VersionsPatched VersionsPHP 8.58.5.11 and below8.5.12PHP 8.48.4.26 and below8.4.27PHP 8.38.3.35 and below8.3.36PHP 8.28.2.34 and below8.2.35PHP 8.1 (EOL)8.1.34 (built before 21 Oct 2026)8.1.34 (built on 21 Oct 2026)PHP 8.0 (EOL)8.0.30 (built before 21 Oct 2026)8.0.30 (built on 21 Oct 2026)PHP 7.4 (EOL)7.4.33 (built before 21 Oct 2026)7.4.33 (built on 21 Oct 2026)

• PHP on Plesk Obsidian for Windows:

ProductAffected VersionsPatched VersionsPHP 8.58.5.11 and below8.5.12PHP 8.48.4.26 and below8.4.27PHP 8.38.3.35 and below8.3.36PHP 8.28.2.34 and below8.2.35

• Plesk Obsidian (sw-engine component):

ProductAffected VersionsPatched VersionsPlesk for Linux (sw-engine, part of Plesk UI)-Plesk Obsidian 18.0.80.10 and below

-Plesk Obsidian 18.0.81 through 18.0.81.3-Plesk Obsidian 18.0.80.11

-Plesk Obsidian 18.0.81.4Plesk for Windows (sw-engine, part of Plesk UI)-Plesk Obsidian 18.0.80.10 and below

-Plesk Obsidian 18.0.81 through 18.0.81.3Plesk Obsidian 18.0.80.11
Plesk Obsidian 18.0.81.4
Support Link: https://support.plesk.com/hc/en-us/articles/44397729587351-Vulnerability-CVE-2026-109618-and-CVE-2026-109619-Remote-code-execution-in-PHP-shipped-with-Plesk
Action Required:
Update Plesk Now
To update your Plesk version, follow the steps below:

1. Log into Plesk.
2. Go to Tools & Settings > Updates and Upgrades.
3. Install the latest Plesk updates to version 18.0.80.11 or 18.0.81.4
4. Verify the installed version under Tools & Settings > Server Components.

To check your PHP versions, please click here.

We will be performing network maintenance on January 18, 2025, beginning at approximately 01:00 AM CST. Network Engineers will be installing additional Line cards into our Edge routers.  The maintenance window is 2 hours.  No downtime is expected.

We appreciate your patience and understanding during this period. Should you have any questions or need further assistance, please do not hesitate to contact our support team.

Thank you for your continued trust and partnership.

We will be performing network maintenance on January 25, 2025, beginning at approximately 01:00 AM CST. Network Engineers will be installing additional Line cards into our Edge routers.  The maintenance window is 2 hours.  No downtime is expected.

We appreciate your patience and understanding during this period. Should you have any questions or need further assistance, please do not hesitate to contact our support team.

Thank you for your continued trust and partnership.

On February 23, 2025, beginning at approximately 11:00 AM EST and lasting for approximately 1 hour, our network operations team will be performing maintenance on the network at our ATL1 location. There is no anticipated impact as a result of the work that is being done.

We appreciate your patience and understanding during this period. Should you have any questions or need further assistance, please do not hesitate to contact our support team.

Thank you for your continued trust and partnership