Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
4.4

cPanel lets attackers register privileged usernames

CVE-2017-18465 · published 7 years ago
Summary

Versions of cPanel prior to 62.0.17 do not block certain system‑level usernames when new accounts are created. An attacker could register one of these names and gain elevated access to the server. Upgrade cPanel to 62.0.17 or later, or apply the vendor’s recommended configuration to block reserved usernames.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
cpanel cpanel >= 55.9999.61, < 56.0.46
>= 57.9999.48, < 58.0.45
>= 59.9999.58, < 60.0.39
>= 61.9999.55, < 62.0.17
cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*
Original advisory text
cPanel before 62.0.17 does not have a sufficient list of reserved usernames (SEC-227).
cPanel before 62.0.17 does not have a sufficient list of reserved usernames (SEC-227).
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
4.4 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-20Improper Input Validation
Timeline
Published5 Aug 2019
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2017-18465 · NVD
Track software like this
Free during beta