---
id: CVE-2026-97711
title: >-
  Serialize JavaScript serializes JavaScript values to a superset of JSON that
  includes regular expressions and functions
summary: >-
  Serialize JavaScript serializes JavaScript values to a superset of JSON that
  includes regular expressions and functions. From 7.1.1 until 7.1.2, function
  values serialized by serialize-javascript are not fully protected against
  script-cl…
severity: low
cvss: 2.3
cvssVector: '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'
cwe:
  - CWE-79
  - CWE-80
vendor: yahoo
product: serialize-javascript
affected:
  - 'serialize-javascript >= 7.1.1, < 7.1.2'
patched:
  - serialize-javascript 7.1.2
published: '2026-09-29'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T19:38:27.293'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97711'
references:
  - url: >-
      https://github.com/yahoo/serialize-javascript/commit/2bdbaaff9cb8a4639135eb24cfcd383d3fefb534
    label: security-advisories@github.com
  - url: 'https://github.com/yahoo/serialize-javascript/releases/tag/v7.1.2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-gfhx-hw2g-v5hg
    label: security-advisories@github.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97711.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97711'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2543276'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97711'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97711'
  - url: 'https://github.com/advisories/GHSA-gfhx-hw2g-v5hg'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - ghsa
  - npm
  - score-dispute
epss: 0.00318
epssPercentile: 0.24817
aliases:
  - GHSA-gfhx-hw2g-v5hg
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-29T16:53:22.214214Z'
cvssSource: cna
scores:
  cna: 2.3
  vendor: 6.1
ingestedAt: '2026-09-29T16:39:33.274Z'
---

## Overview

Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. From 7.1.1 until 7.1.2, function values serialized by serialize-javascript are not fully protected against script-closing tags in attacker-influenced function source because SCRIPT_CLOSE_REGEXP can consume a second closing tag inside one match. When the serialized function is embedded in a script element, the surviving closing tag terminates the element early and causes the remaining output to be parsed as HTML, enabling cross-site scripting in the page origin. Only function values are affected; ordinary data values and options.isJSON output are unaffected. This issue is fixed in version 7.1.2.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-97711)

Affected packages:

- `serialize-javascript >= 7.1.1, < 7.1.2`

Patched in:

- `serialize-javascript 7.1.2`

Source: https://github.com/advisories/GHSA-gfhx-hw2g-v5hg

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-30 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97711.json)