What is CVE-2026-29203?

CVE-2026-29203 is a high-severity vulnerability in Webpros Cpanel, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 8.8/10. Published 2026-05-08.

How severe is CVE-2026-29203?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Webpros Cpanel

CVE-2026-29203

A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories. That can cause DoS or local privilege escalation when an authenticated cPanel us…

EPSS: 0.000 (14.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Webpros Cpanel — versions 11.124.0.0, 11.94.0.0, 11.134.0.0
Webpros Cpanel (Centos 6, Cloudlinux 6) — versions 11.110.0.0
Webpros Cpanel (Cloudlinux 6, Centos 6) — versions 0, 11.110.0.0
Webpros Wp Squared — versions 11.136.1.0, 0

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following

References

support@hackerone.com

Frequently asked questions

What is CVE-2026-29203?: CVE-2026-29203 is a high-severity vulnerability in Webpros Cpanel, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 8.8/10. Published 2026-05-08.
How severe is CVE-2026-29203?: High severity. CVSS v3 base score is 8.8 out of 10.