Skip to main content
VulnerabilityPublished

CVE-2026-105475: WebPros cPanel · Improper Neutralization of Null Byte or NUL Character

Affects WebPros cPanelSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 8.7 High · fixed in 11.138.0.19 : patch WebPros cPanel soon.

Data as of 2 Nov 2026, 21:58 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (hackerone)CVSS 4.08.7
Patch
Available – fixed in 11.138.0.19, 11.136.0.51, 11.134.0.67 +1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade cPanel and cpanel/cpanel to 11.138.0.19, 11.136.0.51, 11.134.0.67 or 11.110.0.154.

Affected software

ProductAffectedFixed in
WebProscPanelAffected
  • <11.138.0.19
Fixed in
  • 11.138.0.19
WebProscPanelAffected
  • <11.136.0.51
Fixed in
  • 11.136.0.51
WebProscPanelAffected
  • <11.134.0.67
Fixed in
  • 11.134.0.67
WebProscPanelAffected
  • <11.110.0.154
Fixed in
  • 11.110.0.154
Cpanelcpanel/cpanelpkg:rpm/cpanel/cpanelOther threatsAffected
  • <11.138.0.19
  • <11.136.0.51
  • <11.134.0.67
  • <11.110.0.154
Fixed in
  • 11.138.0.19
  • 11.136.0.51
  • 11.134.0.67
  • 11.110.0.154

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Apply the official fixes by upgrading to cPanel versions 11.138.0.19, 11.136.0.51, 11.134.0.67, or 11.110.0.154 or later. These versions contain patches that address the null byte neutralization issue. Since this is not a cloud service, manual patching is required. No additional mitigation steps are indicated by the vendor advisory.

Description

Improper neutralization of a NUL byte in cPanel allows remote attackers to read any mail account's calendar and contact data.

References

Community reviews

Loading reviews…