CVE-2026-65646Network attack vectorHinoki check available

Privilege escalation via DNS zone file disclosure

Published Aug 26, 2026 · Updated Aug 27, 2026

Injection in Plesk for Linux before 18.0.79.8 and 18.0.80 through 18.0.80.3 allows remote authenticated users to read server files. The DNS zone management functionality fails to neutralize special elements, but Plesk has not published the affected parameter or downstream operation. An ordinary hosting subscription with a DNS-managed domain is sufficient; exposed administrator or database credentials grant full panel and hosted-database access.

CVSS severity8.7
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Injection in Plesk for Linux before 18.0.79.8 and 18.0.80 through 18.0.80.3 allows remote authenticated users to read server files. The DNS zone management functionality fails to neutralize special elements, but Plesk has not published the affected parameter or downstream operation. An ordinary hosting subscription with a DNS-managed domain is sufficient; exposed administrator or database credentials grant full panel and hosted-database access.

The record

CVE
CVE-2026-65646
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
WebPros
Product
Plesk
Classifications
CWE-74, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <18.0.79.8
  2. Affected versionversion=18.0.80 <18.0.80.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WebPros · Pleskversion=0 <18.0.79.8; version=18.0.80 <18.0.80.4

Published CVSS scores

8.7HackerOne CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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