Improper link resolution before file access in cPanel allows remote authenticated users to write arbitrary root-owned files and escalate pr…

published 2026-11-02 6 d ago modified 2026-11-03 5 d ago also EUVD-2026-115631

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

Improper link resolution before file access in cPanel allows remote authenticated users to write arbitrary root-owned files and escalate privileges.

Patch / fix

fixed in 1

WebPros cPanel 11.110.0.154, 11.134.0.67, 11.136.0.51, 11.138.0.19

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 7 d ago (2026-11-02)

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

WebPros cPanel

Classification

Weakness

CWE-59 Improper Link Resolution Before File Access

References

support.cpanel.net /hc/en-us/articles/44356595655703-Security-CVE-2026-105476-Arbitrary-File-Write-as-Root-in-cPanel-WHM-October-

Sources

CVE List CVE-2026-105476
NVD CVE-2026-105476

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary