CVE-2026-29203 - Vulnerability Details

Description

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 user places a symlink at a user-controlled legacy Nova path under their home directory.

Published: 2026-05-08

Score: 5.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

WebPros

cPanel

unaffected

Version	Status	Constraints
`11.136.0.0`	affected	< 11.136.0.9
`11.134.0.0`	affected	< 11.134.0.25
`11.132.0.0`	affected	< 11.132.0.31
`11.130.0.0`	affected	< 11.130.0.22
`11.126.0.0`	affected	< 11.126.0.58
`11.124.0.0`	affected	< 11.124.0.37
`11.118.0.0`	affected	< 11.118.0.66
`11.110.0.0`	affected	< 11.110.0.117
`11.102.0.0`	affected	< 11.102.0.41
`11.94.0.0`	affected	< 11.94.0.30
`11.86.0.0`	affected	< 11.86.0.43

WebPros

cPanel (CloudLinux 6, CentOS 6)

unaffected

Version	Status	Constraints
`11.110.0.0`	affected	< 11.110.0.116

WebPros

WP Squared

unaffected

Version	Status	Constraints
`11.136.1.0`	affected	< 11.136.1.10

No data.

Vendor Product Confidence Versions

Webpros

Cpanel

100%

Version	Status	Scheme	Platform
`[11.136.0.0,11.136.0.9)`	affected	generic	—
`[11.134.0.0,11.134.0.25)`	affected	generic	—
`[11.132.0.0,11.132.0.31)`	affected	generic	—
`[11.130.0.0,11.130.0.22)`	affected	generic	—
`[11.126.0.0,11.126.0.58)`	affected	generic	—
`[11.124.0.0,11.124.0.37)`	affected	generic	—
`[11.118.0.0,11.118.0.66)`	affected	generic	—
`[11.110.0.0,11.110.0.116)`	affected	generic	—
`[11.110.0.0,11.110.0.117)`	affected	generic	—
`[11.102.0.0,11.102.0.41)`	affected	generic	—
`[11.94.0.0,11.94.0.30)`	affected	generic	—
`[11.86.0.0,11.86.0.43)`	affected	generic	—

Webpros

Cpanel (centos 6, Cloudlinux 6)

100%

Version	Status	Scheme	Platform
`[11.110.0.0,11.110.114)`	affected	generic	—

Webpros

Wp Squared

100%

Version	Status	Scheme	Platform
`[11.136.1.0,11.136.1.10)`	affected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00048.

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://support.cpanel.net/hc/en-us/articles/40311543760407-Security-CVE-2026-29203-cPanel-WHM-WP2-Security-Update-May-08-2026

History

Fri, 15 May 2026 20:45:00 +0000

Type	Values Removed	Values Added
Title	Symlink Traversal Allowing Local Privilege Escalation in cPanel Nova

Fri, 15 May 2026 18:00:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'}`

Sun, 10 May 2026 21:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Webpros Webpros cpanel Webpros cpanel (centos 6, Cloudlinux 6) Webpros wp Squared
Vendors & Products		Webpros Webpros cpanel Webpros cpanel (centos 6, Cloudlinux 6) Webpros wp Squared

Fri, 08 May 2026 21:30:00 +0000

Type	Values Removed	Values Added
Title		Symlink Traversal Allowing Local Privilege Escalation in cPanel Nova

Fri, 08 May 2026 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Fri, 08 May 2026 19:00:00 +0000

Type	Values Removed	Values Added
Description		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 user places a symlink at a user-controlled legacy Nova path under their home directory.
Weaknesses		CWE-61
References		https://support.cpanel.net/hc/en-us/articles/40311543760407-Security-CVE-2026-29203-cPanel-WHM-WP2-Security-Update-May-08-2026

Subscriptions

Webpros Cpanel Cpanel (centos 6, Cloudlinux 6) Wp Squared

MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2026-05-08T18:51:05.541Z

Updated: 2026-05-15T17:14:52.318Z

Reserved: 2026-03-04T15:00:09.267Z

Link: CVE-2026-29203

Vulnrichment

Updated: 2026-05-08T19:20:00.014Z

NVD

Status : Awaiting Analysis

Published: 2026-05-08T19:16:30.147

Modified: 2026-05-15T18:16:14.443

Link: CVE-2026-29203

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-05-15T20:30:06Z

Weaknesses

CWE-61

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact total

Subscriptions

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