CVE-2025-1647Public exploitNetwork attack vector

Cross-site scripting via clobbered HTML document creation

Published May 15, 2025 · Updated Jun 1, 2025

Cross-site scripting in Bootstrap 3.4.1 allows remote attackers to execute script through Tooltip or Popover HTML content. The sanitizeHtml function skips neutralization when DOM clobbering replaces document.implementation.createHTMLDocument, leaving crafted title or data-content markup executable. Exploitation requires an affected application to enable HTML rendering for a Tooltip or Popover and incorporate attacker-controlled markup; successful script runs in the application's browser origin.

CVSS severity5.6
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Bootstrap 3.4.1 allows remote attackers to execute script through Tooltip or Popover HTML content. The sanitizeHtml function skips neutralization when DOM clobbering replaces document.implementation.createHTMLDocument, leaving crafted title or data-content markup executable. Exploitation requires an affected application to enable HTML rendering for a Tooltip or Popover and incorporate attacker-controlled markup; successful script runs in the application's browser origin.

The record

CVE
CVE-2025-1647
Published
May 15, 2025
Updated
Jun 1, 2025
Vendor
Bootstrap
Product
Bootstrap
Classifications
CWE-79, CAPEC-63, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.4.1 <4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Bootstrap · Bootstrapversion=3.4.1 <4.0.0

Published CVSS scores

5.6HeroDevsCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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