---
id: CVE-2026-116620
title: Tencent RapidJSON Regex stream.h Take out-of-bounds
summary: >-
  A security vulnerability has been detected in Tencent RapidJSON up to 1.1.0.
  This issue affects the function GenericStringStream<UTF8<char>>::Take in the
  library include/rapidjson/stream.h of the component Regex Parser. The
  manipulation …
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'
cvssSource: cna
cwe:
  - CWE-125
  - CWE-119
vendor: Tencent
product: RapidJSON
affected:
  - RapidJSON 1.0
  - RapidJSON 1.1.0
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-27T13:58:02.775192Z'
exploitAvailable: true
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T14:14:50.011Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116620'
references:
  - url: 'https://vuldb.com/vuln/426552'
    label: VDB-426552 | Tencent RapidJSON Regex stream.h Take out-of-bounds
  - url: 'https://vuldb.com/vuln/426552/cti'
    label: 'VDB-426552 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-116620'
    label: CVE-2026-116620 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1024236'
    label: 'Submit #1024236 | tencent RapidJSON 1.1.0 Buffer Overflow'
  - url: 'https://github.com/Tencent/rapidjson/issues/2401'
  - url: 'https://github.com/Tencent/rapidjson/'
tags:
  - cve.org
  - exploit-available
epss: 0.00304
epssPercentile: 0.23034
ingestedAt: '2026-10-27T16:11:59.445Z'
---

## Overview

A security vulnerability has been detected in Tencent RapidJSON up to 1.1.0. This issue affects the function GenericStringStream<UTF8<char>>::Take in the library include/rapidjson/stream.h of the component Regex Parser. The manipulation leads to out-of-bounds read. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## Affected

- `RapidJSON 1.0`
- `RapidJSON 1.1.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.