Tencent RapidJSON 1.1.0 diyfp.h GetCachedPowerByIndex decimalPosition out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00+

Summaryinfo

A vulnerability was found in Tencent RapidJSON 1.1.0 and classified as critical. The affected element is the function GetCachedPowerByIndex in the library include/rapidjson/internal/diyfp.h. Such manipulation of the argument decimalPosition leads to out-of-bounds. This vulnerability is referenced as CVE-2026-124586. It is possible to launch the attack remotely. Furthermore, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Tencent RapidJSON 1.1.0. Affected by this issue is the function GetCachedPowerByIndex in the library include/rapidjson/internal/diyfp.h. The manipulation of the argument decimalPosition with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-124586. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/08/2026 Advisory disclosed
11/08/2026 +0 days VulDB entry created
11/08/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 2405
Status: Confirmed

CNA: VulDB
CVE: CVE-2026-124586 (🔒)

GCVE (CVE): GCVE-0-2026-124586
GCVE (VulDB): GCVE-100-433010
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/08/2026 21:29
Changes: 11/08/2026 21:29 (58)
Complete: 🔍
Submitter: shuidajiao
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1039172: tencent RapidJSON 1.1.0 Out-of-Bounds Read (by shuidajiao)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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