CVE-2018-6341

VendorfacebookProductreactDiscoveredDec 31, 2018UpdatedMay 6, 2025

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.

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CVSS v3.1

6.1 MEDIUM

EPSS

3.43%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Sep 23, 2026

● 0.00pp

3.43% → 3.43% over 9 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

ScopeCHANGED

ConfidentialityLOW

IntegrityLOW

AvailabilityNONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Connections

2 relationships

CWE-79

source

Timeline

disclosure → media coverage

Dec 31, 2018

Disclosure — published as a CVE record. · last revised by NVD May 6, 2025

Public PoC (1)

github.com/diwangs/react16-ssr

Unverified third-party code — review before executing.