PT-2025-36473 · Json::Xs · Json::Xs

Michael Hudak · Published 2025-09-08 · Updated 2025-09-08 · CVE-2025-40928

Positive Technologies · (AI Summary)

CVSS v3.1

7.5

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions:

JSON::XS versions prior to 4.04

Description:

JSON::XS, a Perl module, contains an integer buffer overflow that can lead to a segmentation fault when processing specially crafted JSON data. This issue may result in denial-of-service attacks.

Recommendations:

Update JSON::XS to version 4.04 or later.

Fix

DoS

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2025-40928

Affected Products

Json::Xs

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2025-40928 · Security Note
• https://security.metacpan.org/patches/J/JSON-XS/4.03/CVE-2025-40928-r1.patch · Patch
• https://twitter.com/CVEnew/status/1965076111273955583 · Twitter Post
• https://metacpan.org/release/MLEHMANN/JSON-XS-4.03/source/XS.xs#L256 · Note
• https://twitter.com/VulmonFeeds/status/1965095410277429531 · Twitter Post