SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-6341

That lack of escaping could lead to a cross-site scripting vulnerability.

MEDIUM 6.1EPSS 3.43%

Does this matter?

Lower severity and a low EPSS score (3.43%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
3.43% probability · 89th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
facebook/react
Source
cve-assign@fb.com
EPSS trend
0%3%5%27 October 2026: 3.43%27 October 202627 October 2026

EPSS 3.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.