cPanel: Relative Path Traversal
CVE-2026-29201 is a high-severity relative path traversal vulnerability in cPanel from WebPros, with a CVSS 3.1 base score of 8.6 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 11.136.0.9, 11.134.0.25, 11.132.0.31 as the first without the flaw, so updating cPanel to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.43% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update cPanel to 11.136.0.9 or 11.134.0.25 or 11.132.0.31 or 11.130.0.22, whichever matches your release line, or a later version.
- Update WP Squared to 11.136.1.11 or a later version.
- Update cPanel (CloudLinux 6, CentOS 6) to 11.110.0.116 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| WebPros | cPanel | 11.136.0.0 up to, but not including, 11.136.0.9; 11.134.0.0 up to, but not including, 11.134.0.25; 11.132.0.0 up to, but not including, 11.132.0.31; 11.130.0.0 up to, but not including, 11.130.0.22; 11.126.0.0 up to, but not including, 11.126.0.58; 11.124.0.0 up to, but not including, 11.124.0.37; 11.118.0.0 up to, but not including, 11.118.0.66; 11.110.0.0 up to, but not including, 11.110.0.117; and 3 more ranges | 11.136.0.9, 11.134.0.25, 11.132.0.31, 11.130.0.22, 11.126.0.58, 11.124.0.37 |
| WebPros | WP Squared | 11.136.1.0 up to, but not including, 11.136.1.11 | 11.136.1.11 |
| WebPros | cPanel (CloudLinux 6, CentOS 6) | 11.110.0.0 up to, but not including, 11.110.0.116 | 11.110.0.116 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- LowLimited modification of data is possible.
- Availability
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L. Scored by CNA (hackerone.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.6 | High | CNA (hackerone.com) |
| CVSS 3.1 | 4.3 | Medium | CISA (ADP) |
Official description
Insufficient input validation of the feature file name in `feature::LOADFEATUREFILE` adminbin call can cause arbitrary file read when a relative file path is passed.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Relative Path Traversal
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as.. that can resolve to a location that is outside of that directory.
How developers prevent this class of flaw
- Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in cPanel
- 8.1 High severity
- 8.3 High severity
- 8.2 High severity
- 8.6 High severity
- 9.8 Critical severity
Recent Relative Path Traversal vulnerabilities
- 8.6 High severity
- 7.8 High severity
- 7.2 High severity
- 8.0 High severity
- 7.5 High severity
- 8.3 High severity
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