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CVE-2026-8295— Integer overflow in simdjson

AI Predicted 7.5 Difficulty: Moderate EPSS 0.04% · P13

Affected Version Matrix 1

VendorProductVersion RangeStatus
simdjsonsimdjson< 4.6.4affected
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I. Basic Information for CVE-2026-8295

Vulnerability Information
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Vulnerability Title
Integer overflow in simdjson
Source: NVD (National Vulnerability Database)
Vulnerability 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
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
simdjsonsimdjson 0 ~ 4.6.4 -

II. Public POCs for CVE-2026-8295

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III. Intelligence Information for CVE-2026-8295

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IV. Related Vulnerabilities

Same weakness: CWE-190

V. Comments for CVE-2026-8295

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