Authenticated cross-customer database access via IDOR
Published Aug 26, 2026 · Updated Aug 26, 2026
Authorization bypass in Plesk 18.0.79.7 and earlier or 18.0.80 through 18.0.80.3 lets remote authenticated users access other customers' databases. The CNA maps the flaw to user-controlled-key authorization bypass, but neither source names the request handler, object key, or failed ownership check. A valid customer account on the same server is required; exploitation permits viewing, changing, or deleting another customer's data.
Summary
What happened
Authorization bypass in Plesk 18.0.79.7 and earlier or 18.0.80 through 18.0.80.3 lets remote authenticated users access other customers' databases. The CNA maps the flaw to user-controlled-key authorization bypass, but neither source names the request handler, object key, or failed ownership check. A valid customer account on the same server is required; exploitation permits viewing, changing, or deleting another customer's data.
The record
- CVE
- CVE-2026-65642
- Published
- Aug 26, 2026
- Updated
- Aug 26, 2026
- Vendor
- WebPros
- Product
- Plesk
- Classifications
- CWE-639, T1213.006
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 26, 2026CVE publishedPublication date reported by the CVE source.
- Aug 26, 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.
- Affected versionversion=0 <=18.0.79.7
- Affected versionversion=18.0.80 <18.0.80.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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