Skip to content

Cross-Site Scripting in sanitize-html

Moderate severity GitHub Reviewed Published Nov 9, 2018 to the GitHub Advisory Database • Updated Sep 8, 2023

Package

npm sanitize-html (npm)

Affected versions

< 1.2.3

Patched versions

1.2.3

Description

Affected versions of sanitize-html are vulnerable to cross-site scripting.

Proof of Concept:

<IMG SRC= onmouseover="alert('XSS');">
produces the following:

<img src="onmouseover="alert('XSS');"" />
This is definitely invalid HTML, but would suggest that it's being interpreted incorrectly by the parser.

Recommendation

Update to version 1.2.3 or later.

References

Published to the GitHub Advisory Database Nov 9, 2018
Reviewed Jun 16, 2020
Last updated Sep 8, 2023

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

0.119%
(47th percentile)

Weaknesses

CVE ID

CVE-2017-16017

GHSA ID

GHSA-wg96-3933-j2w5

Source code

No known source code
Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.