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Sanitize-html Vulnerable To REDoS Attacks

High severity GitHub Reviewed Published Aug 31, 2022 to the GitHub Advisory Database • Updated Apr 22, 2024

Package

npm sanitize-html (npm)

Affected versions

< 2.7.1

Patched versions

2.7.1

Description

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

References

Published by the National Vulnerability Database Aug 30, 2022
Published to the GitHub Advisory Database Aug 31, 2022
Last updated Apr 22, 2024
Reviewed Apr 22, 2024

Severity

High

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
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

EPSS score

0.121%
(48th percentile)

Weaknesses

CVE ID

CVE-2022-25887

GHSA ID

GHSA-cgfm-xwp7-2cvr

Source code

No known source code
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