Vulnerability 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
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Related Weaknesses (CWE)
References
- https://metacpan.org/release/MLEHMANN/JSON-XS-4.03/source/XS.xs#L256
- https://security.metacpan.org/patches/J/JSON-XS/4.03/CVE-2025-40928-r1.patch
- http://www.openwall.com/lists/oss-security/2025/09/08/2
- https://lists.debian.org/debian-lts-announce/2025/09/msg00033.html
FAQ
What is CVE-2025-40928?
CVE-2025-40928 is a vulnerability with a CVSS score of 7.5 (HIGH). 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
How severe is CVE-2025-40928?
CVE-2025-40928 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-40928?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.