CVE-2025-40929 – Cpanel::JSON::XS before version 4.40 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact

The following table lists the changes that have been made to the
CVE-2025-40929 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 9b29abf9-4ab0-4765-b253-1875cd9b441e

    Sep. 08, 2025

    Action Type Old Value New Value
    Added Description Cpanel::JSON::XS before version 4.40 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact
    Added CWE CWE-122
    Added Reference https://github.com/rurban/Cpanel-JSON-XS/commit/378236219eaa35742c3962ecbdee364903b0a1f2.patch
    Added Reference https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.39/source/XS.xs#L713
    Added Reference https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.40/changes
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