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Vulnerability details: VCID-r5sc-6wqh-9uhv
Vulnerability ID VCID-r5sc-6wqh-9uhv
Aliases CVE-2018-6341
GHSA-mvjj-gqq2-p4hw
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.10073 https://api.first.org/data/v1/epss?cve=CVE-2018-6341
epss 0.10073 https://api.first.org/data/v1/epss?cve=CVE-2018-6341
epss 0.10073 https://api.first.org/data/v1/epss?cve=CVE-2018-6341
cvssv3.1 6.1 https://github.com/advisories/GHSA-mvjj-gqq2-p4hw
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-mvjj-gqq2-p4hw
generic_textual MODERATE https://github.com/advisories/GHSA-mvjj-gqq2-p4hw
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2018-6341
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2018-6341
cvssv3.1 6.1 https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
cvssv3.1 6.1 https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
generic_textual MODERATE https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
ssvc Track https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
cvssv3.1 6.1 https://snyk.io/vuln/npm:react-dom:20180802
generic_textual MODERATE https://snyk.io/vuln/npm:react-dom:20180802
cvssv3.1 6.1 https://twitter.com/reactjs/status/1024745321987887104
cvssv3.1 6.1 https://twitter.com/reactjs/status/1024745321987887104
generic_textual MODERATE https://twitter.com/reactjs/status/1024745321987887104
ssvc Track https://twitter.com/reactjs/status/1024745321987887104
cvssv3.1 6.1 https://www.npmjs.com/advisories/1421
generic_textual MODERATE https://www.npmjs.com/advisories/1421
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-6341
https://snyk.io/vuln/npm:react-dom:20180802
https://www.npmjs.com/advisories/1421
1024745321987887104 https://twitter.com/reactjs/status/1024745321987887104
CVE-2018-6341 https://nvd.nist.gov/vuln/detail/CVE-2018-6341
GHSA-mvjj-gqq2-p4hw https://github.com/advisories/GHSA-mvjj-gqq2-p4hw
react-v-16-4-2.html https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/advisories/GHSA-mvjj-gqq2-p4hw
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-6341
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-05-06T16:54:12Z/ Found at https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://snyk.io/vuln/npm:react-dom:20180802
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://twitter.com/reactjs/status/1024745321987887104
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://twitter.com/reactjs/status/1024745321987887104
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-05-06T16:54:12Z/ Found at https://twitter.com/reactjs/status/1024745321987887104
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://www.npmjs.com/advisories/1421
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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unchanged

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Exploit Prediction Scoring System (EPSS)
Percentile 0.93247
EPSS Score 0.10073
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T17:33:59.613634+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2018/6xxx/CVE-2018-6341.json 38.6.0