cPanel cPanel/WHM: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit Administratorrechten
WID-SEC-2026-3061 · first 28.08.2026 · updated 01.09.2026 · CVSS 9,9
What it is about
cPanel ist eine Software für die Verwaltung von Webhosting Auftritten. Die Software ermöglicht es dem Endanwender, Statistiken einzusehen, neue Benutzeraccounts anzulegen, Maileinstellungen zu verändern und vieles mehr. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in cPanel cPanel/WHM ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode mit Administratorrechten auszuführen
Am I affected?
Affected according to the BSI:
- cPanel cPanel/WHM <11.110.0.14
- cPanel cPanel/WHM <11.134.0.53
- cPanel cPanel/WHM <11.136.0.37
- cPanel cPanel/WHM <11.138.0.2
- cPanel cPanel/WHM WP2 <11.138.1.7
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- cPanel cPanel/WHM 11.110.0.14
- cPanel cPanel/WHM 11.134.0.53
- cPanel cPanel/WHM 11.136.0.37
- cPanel cPanel/WHM 11.138.0.2
- cPanel cPanel/WHM WP2 11.138.1.7
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- cPanel Security Advisory vom 2026-08-27 support.cpanel.net
CVE: CVE-2026-65643
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.