CVE-2018-6341

MEDIUM

6.1

CVSS Score

Published: December 31, 2018 at 10:00 PM UTC

Updated: June 17, 2026 at 02:01 AM UTC

1 product affected across 1 vendorReact

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Severity

MEDIUM6.1

Exploit prediction

EPSS 3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

React · Facebook

95%

v ≥ 16.0.0v ≥ 16.1.0v ≥ 16.2.0v ≥ 16.3.0v ≥ 16.4.016.0.0 ≤ v < 16.0.116.1.0 ≤ v < 16.1.216.2.0 ≤ v < 16.2.116.3.0 ≤ v < 16.3.316.4.0 ≤ v < 16.4.216.0.0 16.0.1 16.1.0 16.1.2 16.2.0 16.2.1 16.3.0 16.3.3 16.4.0 16.4.2

Vendor states this is fixed in 16.0.0 (unaffected)

Affected range stops below 16.0.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.1.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.3.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.4.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html

x_refsource_MISCVendor Advisory

Source: [email protected]

https://twitter.com/reactjs/status/1024745321987887104

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-79

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