CVE-2017-18451: cPanel

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

cPanel before 64.0.21 allows attackers to read a user's crontab file during a short time interval upon a cPAddon upgrade (SEC-257).

Affected products

• cPanel cPanel: from 56.0.1, before 56.0.49 (fixed in 56.0.49); from 58.0.3, before 58.0.49 (fixed in 58.0.49); from 60.0.3, before 60.0.43 (fixed in 60.0.43); from 62.0.1, before 62.0.24 (fixed in 62.0.24); from 64.0.0, before 64.0.21 (fixed in 64.0.21)

Published 2019-08-02. Last modified 2026-06-17.