CVE-2026-105475

HighCVSS 8.7/10Last modified Nov 3, 2026

Description

Improper neutralization of a NUL byte in cPanel allows remote attackers to read any mail account's calendar and contact data.

Metrics

CVSS 4.0 8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-158

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
WebPros	cPanel	< 11.138.0.19; < 11.136.0.51; < 11.134.0.67; < 11.110.0.154

References

https://support.cpanel.net/hc/en-us/articles/44356591132439-Security-CVE-2026-105475-Unauthenticated-Access-to-Calendar-and-Contact-Data-in-cPanel-WHM-October-20th-2026

Timeline

Published: Nov 2, 2026
Last modified: Nov 3, 2026
NVD status: Awaiting Analysis

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