serialize-javascript from 7.0.1 before 7.1.3 contains a cross-site scripting vulnerability that allows attackers to break out of HTML script elements by ending serialized function source text with an unescaped </script. Attackers controlling a function's source via a spoofed toString() can combine surrounding output delimiters and later values to inject live markup such as img onerror handlers.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Yahoo Subscribe
Serialize Javascript Subscribe

No data.

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No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/yahoo/serialize-javascript/commit/2864b3c6260a3bfd52d2db3e70d1a079de108a61 cve-icon cve-icon
https://github.com/yahoo/serialize-javascript/pull/235 cve-icon cve-icon
https://github.com/yahoo/serialize-javascript/releases/tag/v7.1.3 cve-icon cve-icon
https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-m5mm-p8h7-m29v cve-icon cve-icon
https://www.vulncheck.com/advisories/serialize-javascript-7.0.1-before-7.1.3-xss-via-unescaped-script-in-function-body cve-icon cve-icon
History

Fri, 23 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 23 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Description serialize-javascript from 7.0.1 before 7.1.3 contains a cross-site scripting vulnerability that allows attackers to break out of HTML script elements by ending serialized function source text with an unescaped </script. Attackers controlling a function's source via a spoofed toString() can combine surrounding output delimiters and later values to inject live markup such as img onerror handlers.
Title serialize-javascript 7.0.1 before 7.1.3 XSS via unescaped </script in function body
First Time appeared Yahoo
Yahoo serialize Javascript
Weaknesses CWE-79
CPEs cpe:2.3:a:yahoo:serialize_javascript:*:*:*:*:*:*:*:*
Vendors & Products Yahoo
Yahoo serialize Javascript
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-23T14:58:11.402Z

Reserved: 2026-10-23T13:16:42.305Z

Link: CVE-2026-115754

cve-icon Vulnrichment

Updated: 2026-10-23T14:48:53.897Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-23T14:17:52.590

Modified: 2026-10-23T19:45:03.547

Link: CVE-2026-115754

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T16:15:17Z

Weaknesses