CVE-2026-56843: Webpros Plesk vulnerability
Webpros · Plesk
Fixed in 18.0.78.4 · Affected: Webpros Plesk before 18.0.78.4 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 51% of scored CVEs
DescriptionCVE.org
Incorrect authorization in the XML-RPC API of WebPros Plesk before 18.0.78.4 allows a low-privileged authenticated customer to look up domains they do not own, because ownership is enforced only for certain lookup filters and schema validation is bypassed for legacy protocol versions. This results in cross-tenant disclosure of other tenants' FTP credentials stored in cleartext, which can be leveraged to execute code as another tenant's system user.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Webpros · Pleskfrom 10.4 before 18.0.78.4
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-56843 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.