Technical Questions

Plesk Service/Interface

• Vulnerability CVE-2026-58046: Blind SQL injection in Plesk's XML-RPC API
• CVE-2026-64637 Authentication Bypass Leading to Privilege Escalation in Plesk
• CVE-2026-64636 Vulnerability in Plesk: blind SQL injection
• Alt-php-fpm fails to start on CloudLinux: unable to bind listening socket for address '127.0.0.1:9000': Address already in use (98)
• Vulnerability CVE-2026-48614 in Plesk XML API
• Does CVE-2026-42167 affect ProFTPD in Plesk?
• See all 704 articles

Other

• How to monitor usage of system resources in a period of time using atop
• How to diagnose a DoS/DDoS attack and find websites under attack on a Plesk server
• Vulnerability CVE-2026-9256
• Why does an SSL certificate expire before the subscription period ends?
• Vulnerability CVE-2026-43284: Dirty Frag
• Vulnerability CVE-2026-31431: Copy Fail
• See all 487 articles

Webserver

• Websites on PHP-FPM are unavailable or loading slowly: server reached max_children setting (*), consider raising it
• Vulnerability CVE-2026-49975: HTTP/2 Bomb
• Vulnerability: CVE-2026-42945: DoS and RCE in nginx before 1.31.1/1.30.1
• Is Plesk affected by CVE-2026-23918? (Double Free and possible RCE in Apache http2 module)
• Preferred domain redirect does not work when Nginx is not installed in Plesk
• What do the HTTP status codes that you see in Plesk server logs mean in general?
• See all 530 articles

Applications & Extensions

• How to manage Plesk extensions (install, disable, remove, update)
• What DDoS protection tools are available in Plesk
• How to edit Plesk panel.ini
• Cannot open the WP-Toolkit Plugin in WordPress: Plugin Access token not found
• Unable to create or migrate a domain in Plesk: System error 2: No such file or directory webstatmng: Unable to copy the file /etc/awstats/awstats.model.conf
• Plesk Slave DNS Manager fails to propagate zones: 'site-name' element not expected error
• See all 698 articles

Backup, Restore & Migration

• How to restore a remote full server backup in a new Plesk server?
• Plesk backup task finishes with the warning: Could not back up all data from the directory '/var/qmail/mailnames/example.com'
• Best Practices for Plesk and Server Backups
• Plesk backups to cloud storage fails: Unable to create the remote backup: assign: Bad file descriptor
• Cannot restore Plesk backup on Almalinux 10: Fatal error: plesk::mail::postfix::PostfixConfigurationError(postmap: fatal: lmdb:/var/spool/postfix/plesk/virtual
• Unable access active migration session in Plesk: version_compare(): Argument #1 ($version1) must be of type string, array given.
• See all 385 articles

Databases

• Vulnerability in Plesk’s MS SQL database user password update mechanism
• MSSQL 'sa' user locked out: Login failed for user 'sa'
• Can't install MariaDB in Plesk Windows: FATAL ERROR: Can't create data directory 'N:\MySQL-Data' (one or more intermediate directories do not exist)
• Unable to log in to Plesk: Table 'psa.smb_componentUpdates' doesn't exist in engine
• Cannot see remote MySQL/MariaDB database in Plesk Customer Panel
• MariaDB upgrade option is missing under Tools & Settings > Database Servers
• See all 258 articles

Installation & Upgrade

• How to upgrade Plesk to the next release
• How to update Plesk Obsidian to the latest build
• How to make an in-place upgrade of a Plesk server from CloudLinux 7 to CloudLinux 8?
• How to make an in-place upgrade of a Plesk server from AlmaLinux 8 to AlmaLinux 9?
• Is Ubuntu 26.04 supported by Plesk?
• MariaDB upgrade via Plesk interface fails: curl: (28) Operation timed out after 15000 milliseconds with 0 bytes received
• See all 273 articles

Mail

• Delivery Status Notifications (DSN) sent between local mailboxes are marked as spam by DMARC
• SpamAssassin rules can't be updated on CentOS 7 server with Plesk: config: SpamAssassin failed to parse line, is not valid for "util_rb_3tld"
• Is Roundcube 1.4 secured against CVE-2026-25916 and CVE-2026-26079 in Plesk?
• Integrating SmarterMail 100.0.9560 with Plesk fails: Login failure: Missing auth
• Dovecot IMAP crashes on a Plesk server with Ubuntu 24.04: Panic: file imap-sieve-storage.c: line 216 (imap_sieve_add_mailbox_event): assertion failed
• Unable to start Amavis: ERROR: MISSING REQUIRED ADDITIONAL MODULES: DBD::MariaDB
• See all 554 articles

DNS & Statistics

• Why was AWStats deprecated, what tool replaces it, and what happens to existing servers and domains that still use AWStats?
• How to remove AWStats component from Plesk?
• How to change statistics tool from AWStats to GoAccess for domains in Plesk?
• AWStats traffic significantly differs from Plesk traffic stats in a domain
• How to enable the local DNS zone for a Plesk domain?
• DNS bind service fails on a Plesk server after recent bind package update: loading from master file /var/named/chroot/var/0.13.203.in-addr.arpa.next failed: too many records
• See all 140 articles

Website Builder

• Plesk Sitejet domain fail to publish with permissions error for .well-known directory: filemng: Error occurred during /bin/rm command.
• Sitejet Builder can not be opened for a Plesk domain: Error: Could not connect to Website Builder API
• Error opening Site Builder: pm_Exception: You don't have permission to perform this action
• Plesk Sitejet Builder editing error: Can not access Sitejet Website Builder for this domain after migration.
• Unable to publish website created in Web Presence Builder: APIv1 is deprecated. Please, switch to the new APIv3
• Unable to find Web Presence Builder in Plesk Installer
• See all 24 articles