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CVE-2025-40930

Date: September 8, 2025

JSON::SIMD before version 1.07 and earlier for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-40930
https://metacpan.org/release/PJUHASZ/JSON-SIMD-1.06/source/SIMD.xs#L248
https://github.com/pjuhasz/JSON-SIMD/commit/9a87de7331c9fa5198cae404a83b17649cf7b918.patch
https://metacpan.org/release/PJUHASZ/JSON-SIMD-1.07/changes
https://www.mend.io/vulnerability-database/CVE-2025-40930

Severity Score

Weakness Type (CWE)

Heap-based Buffer Overflow

CWE-122

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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