CVE-2025-40929

5.6 MEDIUM

Published: September 08, 2025 Modified: November 04, 2025

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

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/rurban/Cpanel-JSON-XS/commit/378236219eaa35742c3962ecbdee364903b0a1f2.patch

Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e

https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.39/source/XS.xs#L713

Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e

https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.40/changes

Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e

http://www.openwall.com/lists/oss-security/2025/09/08/1

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2025/09/msg00034.html

Source: af854a3a-2127-422b-91ae-364da2661108

5 reference(s) from NVD

Quick Stats

CVSS v3 Score

5.6 / 10.0

EPSS (Exploit Probability)

0.1%

20th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-122

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