Read the docs

Out-of-bounds read in Tencent RapidJSON regex parser

Priority HIGH 70CWE-119Published · Updated

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

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
TencentRapidJSON1.0; 1.1.0—No fix listedCNA
  • RapidJSON VendorTencent Affected 1.0; 1.1.0 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:tencent:rapidjson:*:*:*:*:*:*:*:*——Tencent
  • cpe:2.3:a:tencent:rapidjson:*:*:*:*:*:*:*:* Versions — — ·Tencent

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 →

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo 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

  1. 2026-10-27 Threatist record created from CVE-2026-116620
  2. 2026-10-27 Affected versions changed · Red Hat
  3. 2026-10-27 CVSS score added · Red Hat
  4. 2026-10-27 CISA SSVC decision points changed
  5. 2026-10-27 Priority changed: MEDIUM → HIGH
  6. 2026-10-27 Alias added: GHSA-xfhf-c35f-773q
  7. 2026-10-30 Affected versions changed · Red Hat
  8. 2026-11-05 Affected versions changed · Red Hat

References

  • 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
See all 69 →

Sources