Integer overflow in simdjson_CVE-2026-8295

6.9 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Description

An integer overflow vulnerability in the simdjson document-builder API allows incorrect buffer size calculations in "string_builder::escape_and_append()" when processing very large input strings on platforms with limited "size_t" width (e.g., 32-bit builds). The overflow can cause insufficient buffer allocation, leading to out-of-bounds memory reads in SIMD routines and potentially resulting in information disclosure, memory corruption, or malformed JSON output.
This vulnerability has been fixed in 4.6.4 release

Basic Information

ID CVE-2026-8295

Source CERT-PL

Published May 14, 2026 at 10:27

Affected Product

Vendor simdjson

Product simdjson

Affected Versions simdjson simdjson 0

CWE Classification

CWE-190

References

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    "published": "2026-05-14T10:27:41.953Z",
    "modified": "2026-05-14T10:27:41.953Z",
    "type": "cve",
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