--- title: "CVE-2026-105476: cPanel - Broken Access Control" description: "cPanel contains a broken access control vulnerability caused by improper link resolution before file access, letting remote authenticated users write arbitrary root-owned files and escalate privileges." url: https://panop.io/threat-heartbeat/CVE-2026-105476/ --- # CVE-2026-105476 cPanel - Broken Access Control cPanel contains a broken access control vulnerability caused by improper link resolution before file access, letting remote authenticated users write arbitrary root-owned files and escalate privileges. CVSS base score 8.8 /10 High CISA KEV Not listed Public exploit None known Authentication Required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105476) ## Details Type Broken Access Control Impact Privilege Escalation, File System Write CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Published 2 November 2026 Updated 3 November 2026 Weakness [CWE-59](https://cwe.mitre.org/data/definitions/59.html) ## Vendor fix Update to the latest version of cPanel. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-105476](https://nvd.nist.gov/vuln/detail/CVE-2026-105476) - [https://support.cpanel.net/hc/en-us/articles/44356595655703-Security-CVE-2026-105476-Arbitrary-File-Write-as-Root-in-cPanel-WHM-October-20th-2026](https://support.cpanel.net/hc/en-us/articles/44356595655703-Security-CVE-2026-105476-Arbitrary-File-Write-as-Root-in-cPanel-WHM-October-20th-2026) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)