VDB-128602 · CVE-2018-6341 · GCVE-0-2018-6341

React up to 16.4.1 ReactDOMServer API Application cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in React up to 16.0.0/16.1.1/16.2.0/16.3.2/16.4.1. Affected by this issue is some unknown functionality of the component ReactDOMServer API. Executing a manipulation as part of Application can lead to cross site scripting. This vulnerability is tracked as CVE-2018-6341. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in React up to 16.0.0/16.1.1/16.2.0/16.3.2/16.4.1 (JavaScript Library). This vulnerability affects an unknown code block of the component ReactDOMServer API. The manipulation as part of a Application leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

React applications which rendered to HTML using the ReactDOMServer API were not escaping user-supplied attribute names at render-time. That lack of escaping could lead to a cross-site scripting vulnerability. This issue affected minor releases 16.0.x, 16.1.x, 16.2.x, 16.3.x, and 16.4.x. It was fixed in 16.0.1, 16.1.2, 16.2.1, 16.3.3, and 16.4.2.

The bug was discovered 08/01/2018. The weakness was disclosed 12/31/2018 (Website). The advisory is available at reactjs.org. This vulnerability was named CVE-2018-6341 since 01/26/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 152 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 16.0.1, 16.1.2, 16.2.1, 16.3.3 or 16.4.2 eliminates this vulnerability.

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

Productinfo

Type

JavaScript Library

Name

React

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: React 16.0.1/16.1.2/16.2.1/16.3.3/16.4.2

Timelineinfo

01/26/2018 🔍
08/01/2018 +187 days 🔍
12/31/2018 +152 days 🔍
12/31/2018 +0 days 🔍
01/01/2019 +1 days 🔍
05/06/2025 +2317 days 🔍

Sourcesinfo

Advisory: reactjs.org
Status: Confirmed

CVE: CVE-2018-6341 (🔍)
GCVE (CVE): GCVE-0-2018-6341
GCVE (VulDB): GCVE-100-128602

Entryinfo

Created: 01/01/2019 12:18
Updated: 05/06/2025 22:34
Changes: 01/01/2019 12:18 (59), 04/25/2020 16:30 (1), 05/06/2025 22:34 (19)
Complete: 🔍
Cache ID: 216::103