CVE-2026-64636
Received Received - Intake

SQL Injection in Plesk Obsidian

Publication date: 2026-08-07

Last updated on: 2026-08-07

Assigner: HackerOne

Description
An SQL injection vulnerability in Plesk Obsidian up to 18.0.80 for Linux and Windows allows an authenticated user to read arbitrary data from the panel database.

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Meta Information

Published
2026-08-07
Last Modified
2026-08-07
Generated
2026-08-07
AI Q&A
2026-08-07
EPSS Evaluated
N/A
NVD
CVE-2026-64636
EUVD
EUVD-2026-54562

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
plesk obsidian to 18.0.80|start_including=18.0.51 (inc)
plesk obsidian to 18.0.80 (exc)
plesk obsidian 18.0.80.1
plesk obsidian 18.0.79.5

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Executive Summary

This is a blind SQL injection vulnerability in Plesk Obsidian versions up to 18.0.80 for Linux and Windows. An authenticated user can exploit it to read arbitrary data from the panel database without needing elevated privileges.

Detection Guidance

Check the installed Plesk version and build in the Plesk interface under Tools & Settings > Plesk > About Plesk to verify if the server is patched.

Impact Analysis

An attacker could extract sensitive data from the server's database, potentially including user credentials, configuration details, or other confidential information stored in the panel.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating compliance requirements for data protection such as GDPR or HIPAA, which mandate strict controls over personal and sensitive data access.

Mitigation Strategies

Update Plesk to the latest build (18.0.80.1 or 18.0.79.5). If immediate updating is not possible, disable OS-level system logins for resellers or disable API access for reseller accounts.

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