Integer Overflow or Wraparound Affecting simdjson package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published16 May 2026
- disclosed14 May 2026
- creditMichał Majchrowicz, Marcin Wyczechowski
Introduced: 14 May 2026
NewCVE-2026-8295 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the escape_and_append function in the document-builder API when processing very large input strings on platforms with limited size_t width. An attacker can cause out-of-bounds memory reads, potentially leading to information disclosure, memory corruption, or malformed output by supplying specially crafted large input data.