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Vulnerability details: VCID-36f4-22dx-47et
Vulnerability ID VCID-36f4-22dx-47et
Aliases CVE-2014-9772
GHSA-79mx-88w7-8f7q
Summary XSS Filter Bypass via Encoded URL The validator module for Node.js contains functionality meant to filter potential XSS attacks (a filter called xss). A method of bypassing the filter via an encoded URL has been publicly disclosed. In general, because the function’s filtering is blacklist-based it is likely that other bypasses will be discovered in the future. Developers are encouraged not to use the xss filter function in this package. ### Details: The xss() function removes the word "javascript" when contained inside an attribute. However, it does not properly handle cases where characters have been hex-encoded. As a result, it is possible to build an input that bypasses the filter but which the browser will accept as valid JavaScript. For example, browsers interpret `<a href="jav&#x61;script:...">abc</a>` as `<a href="javascript:...">abc</a>`.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00444 https://api.first.org/data/v1/epss?cve=CVE-2014-9772
epss 0.00444 https://api.first.org/data/v1/epss?cve=CVE-2014-9772
epss 0.00444 https://api.first.org/data/v1/epss?cve=CVE-2014-9772
epss 0.00444 https://api.first.org/data/v1/epss?cve=CVE-2014-9772
epss 0.00444 https://api.first.org/data/v1/epss?cve=CVE-2014-9772
epss 0.00444 https://api.first.org/data/v1/epss?cve=CVE-2014-9772
cvssv3.1 6.1 https://github.com/advisories/GHSA-79mx-88w7-8f7q
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-79mx-88w7-8f7q
generic_textual MODERATE https://github.com/advisories/GHSA-79mx-88w7-8f7q
cvssv3.1 6.1 https://github.com/chriso/validator.js
generic_textual MODERATE https://github.com/chriso/validator.js
cvssv3 6.5 https://github.com/chriso/validator.js/issues/181
cvssv3.1 6.1 https://github.com/chriso/validator.js/issues/181
generic_textual MODERATE https://github.com/chriso/validator.js/issues/181
cvssv3 6.5 https://github.com/nodejs/security-wg/blob/main/vuln/npm/43.json
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2014-9772
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2014-9772
cvssv3.1 6.1 https://www.npmjs.com/advisories/43
generic_textual MODERATE https://www.npmjs.com/advisories/43
cvssv3.1 6.1 http://www.openwall.com/lists/oss-security/2016/04/20/11
generic_textual MODERATE http://www.openwall.com/lists/oss-security/2016/04/20/11
cvssv3.1 6.1 http://www.securityfocus.com/bid/97102
generic_textual MODERATE http://www.securityfocus.com/bid/97102
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2014-9772
https://github.com/chriso/validator.js
https://github.com/chriso/validator.js/issues/181
https://nodesecurity.io/advisories/43
https://www.npmjs.com/advisories/43
http://www.openwall.com/lists/oss-security/2016/04/20/11
http://www.securityfocus.com/bid/97102
43 https://github.com/nodejs/security-wg/blob/main/vuln/npm/43.json
CVE-2014-9772 https://nvd.nist.gov/vuln/detail/CVE-2014-9772
GHSA-79mx-88w7-8f7q https://github.com/advisories/GHSA-79mx-88w7-8f7q
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-79mx-88w7-8f7q
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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
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/chriso/validator.js
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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
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/chriso/validator.js/issues/181
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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
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-2014-9772
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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
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/43
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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at http://www.openwall.com/lists/oss-security/2016/04/20/11
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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at http://www.securityfocus.com/bid/97102
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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.63674
EPSS Score 0.00444
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T03:45:02.240303+00:00 Npm Importer Import https://github.com/nodejs/security-wg/blob/main/vuln/npm/43.json 38.6.0