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TI-2026-84117 Aliases CVE-2026-105476GHSA-7j4p-q48v-2wqx

Improper link resolution in cPanel allows writing root-owned files

Priority MEDIUM 41CWE-59Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

cPanel releases before 11.138.0.19, 11.136.0.51, 11.134.0.67 and 11.110.0.154 are affected. Improper link resolution (CWE-59) lets the software follow a link before it accesses a file. A remote authenticated user with low privileges can write arbitrary root-owned files and escalate privileges.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00531 45th percentileScored 2026-11-07
Fix Fixed cPanel (WebPros): 11.138.0.19, 11.136.0.51, 11.134.0.67 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WebProscPanelbefore 11.138.0.19; before 11.136.0.51; before 11.134.0.67; before 11.110.0.15411.138.0.19, 11.136.0.51, 11.134.0.67, 11.110.0.154Patch availableCNA
  • cPanel VendorWebPros Affected before 11.138.0.19; before 11.136.0.51; before 11.134.0.67; before 11.110.0.154 Fixed in 11.138.0.19, 11.136.0.51, 11.134.0.67, 11.110.0.154 Patch available CNA

Remediation

Update cPanel to version 11.138.0.19, 11.136.0.51, 11.134.0.67 or 11.110.0.154.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA cPanel (WebPros) Fixed in 11.138.0.19, 11.136.0.51, 11.134.0.67, 11.110.0.154

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    WebPros cPanel 11.110.0.154, 11.134.0.67 and 2 more versions

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-84116 cPanel NUL byte flaw exposes mail account calendars and contactsPriority MEDIUM 44
    Show all 2 records →

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-105476
  2. 2026-11-02 Alias added: GHSA-7j4p-q48v-2wqx
  3. 2026-11-03 CVSS score added · CISA ADP
  4. 2026-11-03 CISA SSVC decision points changed
  5. 2026-11-04 Priority changed: LOW → MEDIUM

References

Other 1

  • TI-2026-30342 WebPros cPanel and WHM Authentication Bypass via Login Flow KEVCVSS 4.0CRITICAL 9.3
  • TI-2026-46792 Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root. CVSS 4.0HIGH 8.7
  • TI-2025-40383 Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS)… CVSS 3.1HIGH 7.5
  • TI-2026-23322 Incorrect privileges management and insufficient path filtering allow to read arbitrary… CVSS 3.1HIGH 8.6
  • TI-2026-47685 Deserialization of untrusted data in WebPros WHMCS CVSS 4.0CRITICAL 9.3
  • TI-2026-23317 Authorization bypass in WebPros Comet Backup CVSS 4.0CRITICAL 9.9
See all 50 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences