Critical severity · published Aug 26, 2026
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…
9.9
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PL
Plesk · WebPros
before 18.0.79.11; 18.0.80 before 18.0.80.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65646
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-65646
support.plesk.com
https://support.plesk.com/hc/en-us/articles/42877023875351-Vulnerability-CVE-2026-65646-in-Plesk-s-DNS-zone-management-functionality
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