Quick answers
- Is CVE-2026-65642 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-65642 being exploited in the wild.
- How severe is CVE-2026-65642?
- Informational severity, with a CVSS score of 6.5, published 26 August 2026.
- Which products and versions are affected?
- Plesk 18.0.79.7 and earlier, 18.0.80 through 18.0.80.3.
- Is there a fix for CVE-2026-65642?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-65642 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-65642?
- Check whether you run Plesk at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An insecure direct object reference (IDOR) vulnerability exists in Plesk's database management interface, allowing authenticated users to read and modify databases of other customers by manipulating object references without proper authorization checks. The vulnerability affects Plesk versions 18.0.79.7 and earlier, and versions 18.0.80 through 18.0.80.3. Exploitation requires valid authentication to the Plesk control panel and network access to the vulnerable interface. An authenticated attacker can access, modify, or delete arbitrary customer databases, leading to data compromise and service disruption. Patches are available in later versions.
Affected products
- Plesk Plesk 18.0.79.7 and earlier, 18.0.80 through 18.0.80.3
Timeline
- 2026-08-26: disclosed