Out-of-bounds read in Tencent RapidJSON regex parser
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.
Summary
Tencent RapidJSON versions up to 1.1.0 contain an out-of-bounds read in the regex parser (CWE-125). A flaw in the Take function of include/rapidjson/stream.h lets a remote attacker trigger the read without authentication or user interaction. A public exploit has been disclosed and may be used. The project received an issue report early but has not responded.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version is listed for Tencent RapidJSON. Red Hat lists Red Hat Enterprise Linux 9 and Red Hat Enterprise Linux AI (RHEL AI) 3 as affected, with no fix available.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet |
Not affected: 4 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenStack Platform 17.1
Timeline
- 2026-10-27 Threatist record created from CVE-2026-116620
- 2026-10-27 Affected versions changed · Red Hat
- 2026-10-27 CVSS score added · Red Hat
- 2026-10-27 CISA SSVC decision points changed
- 2026-10-27 Priority changed: MEDIUM → HIGH
- 2026-10-27 Alias added: GHSA-xfhf-c35f-773q
- 2026-10-30 Affected versions changed · Red Hat
- 2026-11-05 Affected versions changed · Red Hat
References
More Tencent vulnerabilities
- TI-2023-14243 vConsole v3.15.0 was discovered to contain a prototype pollution due to incorrect key and… CVSS 3.1CRITICAL 9.8
- TI-2026-23690 WeKnora: Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation CVSS 3.1CRITICAL 10.0
- TI-2026-23689 WeKnora: Remote Code Execution via SQL Injection Bypass in AI Database Query Tool CVSS 3.1CRITICAL 10.0
- TI-2026-18215 WeKnora has Command Injection in MCP stdio test CVSS 3.1CRITICAL 10.0
- TI-2026-18214 WeKnora vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2026-23684 WeKnora: Broken Access Control in Tenant Management CVSS 3.1HIGH 8.8
Sources
- CVE-2026-116620 · CVE Program
- CVE-2026-116620 · NVD
- FIRST EPSS
- GHSA-xfhf-c35f-773q · GitHub Advisory Database · CC BY 4.0
- CVE-2026-116620 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences