Quick answers
- Is CVE-2026-105476 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105476 being exploited in the wild.
- How severe is CVE-2026-105476?
- Informational severity, published 2 November 2026.
- Which products and versions are affected?
- cPanel cPanel; cPanel WHM.
- Is there a fix for CVE-2026-105476?
- 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-2026-105476 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-105476?
- Check whether you run cPanel or cPanel Whm. 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
The vulnerability stems from improper symlink resolution before file access operations, allowing time-of-check-time-of-use (TOCTOU) attacks. An authenticated attacker can create symlinks pointing to arbitrary system files and trigger cPanel operations that follow those symlinks to write root-owned files. This enables privilege escalation from a user account to root.
Affected products
- cPanel cPanel
- cPanel WHM
Timeline
- 2026-11-02: disclosed