CVE-2026-29203Network attack vector

Root permission changes via symlink-following chmod

Published May 8, 2026 · Updated May 8, 2026

Symlink following in WebPros cPanel and WP Squared allows remote authenticated users to change arbitrary file permissions as root. The Cpanel::Nova::Connector code calls chmod on a legacy Nova path without rejecting symlinks, so the operation follows a link to an attacker-selected system file or directory. An authenticated cPanel account must create the link beneath its home directory; changing the target's mode can crash services or enable local privilege escalation.

CVSS severity5.3
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Symlink following in WebPros cPanel and WP Squared allows remote authenticated users to change arbitrary file permissions as root. The Cpanel::Nova::Connector code calls chmod on a legacy Nova path without rejecting symlinks, so the operation follows a link to an attacker-selected system file or directory. An authenticated cPanel account must create the link beneath its home directory; changing the target's mode can crash services or enable local privilege escalation.

The record

CVE
CVE-2026-29203
Published
May 8, 2026
Updated
May 8, 2026
Vendor
WebPros
Product
cPanel
Classifications
CWE-61, T1222.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.102.0.0 <11.102.0.41
  2. Affected versionversion=11.110.0.0 <11.110.0.116
  3. Affected versionversion=11.110.0.0 <11.110.0.117
  4. Affected versionversion=11.110.0.0 <11.110.114
  5. Affected versionversion=11.118.0.0 <11.118.0.66
  6. Affected versionversion=11.124.0.0 <11.124.0.37
  7. Affected versionversion=11.126.0.0 <11.126.0.58
  8. Affected versionversion=11.130.0.0 <11.130.0.22
  9. Affected versionversion=11.132.0.0 <11.132.0.31
  10. Affected versionversion=11.134.0.0 <11.134.0.25
  11. Affected versionversion=11.136.0.0 <11.136.0.9
  12. Affected versionversion=11.86.0.0 <11.86.0.43
  13. Affected versionversion=11.94.0.0 <11.94.0.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WebPros · cPanelversion=11.102.0.0 <11.102.0.41; version=11.110.0.0 <11.110.0.116; version=11.110.0.0 <11.110.0.117; version=11.110.0.0 <11.110.114; version=11.118.0.0 <11.118.0.66; version=11.124.0.0 <11.124.0.37; version=11.126.0.0 <11.126.0.58; version=11.130.0.0 <11.130.0.22; version=11.132.0.0 <11.132.0.31; version=11.134.0.0 <11.134.0.25; version=11.136.0.0 <11.136.0.9; version=11.86.0.0 <11.86.0.43; version=11.94.0.0 <11.94.0.30
WebPros · WP Squaredversion=11.136.1.0 <11.136.1.10

Published CVSS scores

5.3HackerOne CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-61UNIX Symbolic Link (Symlink) Following
T1222.002File and Directory Permissions Modification: Linux and Mac File and Directory Permissions Modification

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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