CVE-2026-65642: CWE-639 Insecure Direct Object Reference (IDOR) in WebPros Plesk
Description
CVE-2026-65642 is an Insecure Direct Object Reference (IDOR) vulnerability in WebPros Plesk versions 18.0.79.7 and earlier, as well as versions 18.0.80 through 18.0.80.3. This flaw allows remote authenticated users to read and modify databases belonging to other customers. The vulnerability has a high severity with a CVSS score of 8.6. No official patch or remediation guidance is currently available from the vendor.
CVSS v4.0
Score 8.6high
Affected software
WebPros
Plesk
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-639 (Insecure Direct Object Reference), affects WebPros Plesk versions 18.0.79.7 and earlier and 18.0.80 through 18.0.80.3. It permits remote authenticated users to access and alter databases of other customers due to improper access control. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges required beyond authentication, no user interaction, and high impact on confidentiality and integrity. No vendor advisory or patch information is provided, and no known exploits are reported in the wild.
Potential Impact
Exploitation of this vulnerability could lead to unauthorized disclosure and modification of other customers' databases within the affected Plesk installations. This compromises data confidentiality and integrity, potentially affecting multiple tenants on the same server.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to authenticated users with minimal privileges and monitor for suspicious activity related to database access.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-07-22T15:00:06.103Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a8f63b0acd9273b4970b514
Added to database: 08/26/2026, 22:07:44 UTC
Last enriched: 09/09/2026, 15:07:46 UTC
Last updated: 10/10/2026, 18:48:21 UTC
Views: 85
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