CVE-2026-8295 (GCVE-0-2026-8295)
Vulnerability from cvelistv5 – Published: 2026-05-14 10:27 – Updated: 2026-05-14 17:48 X_Open Source
VLAI
EPSS
VEX
Title
Integer overflow in simdjson
Summary
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
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 17:48 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/simdjson/simdjson/releases/tag… | release-notes |
| https://cert.pl/posts/2026/05/CVE-2026-8295 | third-party-advisory |
Impacted products
Date Public
2026-05-14 10:27
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