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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).
Use CWE-264, Cpanel vendor hub and Cpanel product page to widen CVE-2017-18451 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2026-41940, CVE-2025-66429 and CVE-2021-38589 for nearby disclosures in the same product family.