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Bootstrap Cross-site Scripting vulnerability

Moderate severity GitHub Reviewed Published Sep 13, 2018 to the GitHub Advisory Database • Updated Jun 8, 2026

Package

bundler bootstrap (RubyGems)

Affected versions

>= 4.0.0, < 4.1.2
>= 2.3.0, < 3.4.0

Patched versions

4.1.2
3.4.0
npm bootstrap (npm)
>= 4.0.0, < 4.1.2
>= 2.3.0, < 3.4.0
4.1.2
3.4.0
nuget bootstrap (NuGet)
>= 4.0.0, < 4.1.2
>= 2.3.0, < 3.4.0
4.1.2
3.4.0
bundler bootstrap-sass (RubyGems)
>= 2.3.0, < 3.4.0
3.4.0
npm bootstrap-sass (npm)
>= 2.0.4, < 3.4.0
3.4.0
nuget bootstrap.sass (NuGet)
>= 4.0.0, < 4.1.2
4.1.2
maven org.webjars:bootstrap (Maven)
>= 4.0.0, < 4.1.2
>= 2.3.0, < 3.4.0
4.1.2
3.4.0
composer twbs/bootstrap (Composer)
>= 4.0.0, < 4.1.2
>= 2.3.0, < 3.4.0
4.1.2
3.4.0

Description

In Bootstrap starting in version 2.3.0 and prior to versions 3.4.0 and 4.1.2, XSS is possible in the data-container property of tooltip. This is similar to CVE-2018-14041.

References

Published by the National Vulnerability Database Jul 13, 2018
Published to the GitHub Advisory Database Sep 13, 2018
Reviewed Jun 16, 2020
Last updated Jun 8, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(85th percentile)

Weaknesses

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Learn more on MITRE.

CVE ID

CVE-2018-14042

GHSA ID

GHSA-7mvr-5x2g-wfc8

Source code

Credits

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