High severity7.5NVD Advisory· Published Sep 8, 2025· Updated Apr 15, 2026

CVE-2025-40928

Description

JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact

Affected products

Pachno/Json Xsinferred
Range: <4.04
Package: https://pypi.org/project/json-xs

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.openwall.com/lists/oss-security/2025/09/08/2nvd
lists.debian.org/debian-lts-announce/2025/09/msg00033.htmlnvd
metacpan.org/release/MLEHMANN/JSON-XS-4.03/source/XS.xsnvd
security.metacpan.org/patches/J/JSON-XS/4.03/CVE-2025-40928-r1.patchnvd

News mentions

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cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000