Plesk CVE-2026-65646: Improper Input Validation
Plesk is affected by CVE-2026-65646. Improper neutralization of special elements in in Plesk's DNS zone management functionality allows remote authenticated users to disclose arbitrary local files and escalate privileges. Affected versions: before 18.0.79.11 | 18.0.80 before 18.0.80.7. CVSS base score: 9.9.
Затронутые версии
before 18.0.79.11 | 18.0.80 before 18.0.80.7
Команда обновления по умолчанию
plesk installer --select-release-current --reinstall-patchКоманды исправления
AlmaLinux / Ubuntu / Debian / CloudLinux / Rocky Linux
plesk installer --select-release-current --reinstall-patch
plesk versionЧто это значит по лицензии SharedLicense
Your SharedLicense Plesk license itself is not affected — this is a vulnerability in Plesk, not in licensing. Licenses continue to work during and after the update; there is no need to re-issue or re-activate anything. If you resell under your own brand, patch client servers too — unpatched installs put your reputation at risk, not your license.
Improper neutralization of special elements in in Plesk‘s DNS zone management functionality allows remote authenticated users to disclose arbitrary local files and escalate privileges.
Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-65646
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