---
id: CVE-2025-1647
title: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in Bootstrap allows Cross-Site Scripting
  (XSS).This issue affects Bootstrap: from 3.4.1 before 4.0.0.
summary: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in Bootstrap allows Cross-Site Scripting
  (XSS).This issue affects Bootstrap: from 3.4.1 before 4.0.0.
severity: medium
cvss: 5.6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-79
vendor: bootstrap
product: bootstrap
affected:
  - bootstrap = 3.4.1
published: '2025-05-15'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T10:16:36.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-1647'
references:
  - url: 'https://www.herodevs.com/vulnerability-directory/cve-2025-1647'
    label: 36c7be3b-2937-45df-85ea-ca7133ea542c
  - url: 'https://lists.debian.org/debian-lts-announce/2025/06/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2026/10/msg00023.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-1647'
  - url: 'https://github.com/advisories/GHSA-q58r-hwc8-rm9j'
tags:
  - nvd
  - ghsa
  - npm
aliases:
  - GHSA-q58r-hwc8-rm9j
ecosystem: npm
epss: 0.00316
epssPercentile: 0.2249
ingestedAt: '2026-10-09T12:53:26.833Z'
---

## Overview

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Bootstrap allows Cross-Site Scripting (XSS).This issue affects Bootstrap: from 3.4.1 before 4.0.0.

## Remediation

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

## Package advisory (CVE-2025-1647)

Affected packages:

- `bootstrap = 3.4.1`

Source: https://github.com/advisories/GHSA-q58r-hwc8-rm9j