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html-parse-stringify and html-parse-stringify2 vulnerable to Regular expression denial of service (ReDoS)

Moderate severity GitHub Reviewed Published Mar 18, 2021 to the GitHub Advisory Database • Updated Sep 12, 2023

Package

npm html-parse-stringify (npm)

Affected versions

< 2.0.1

Patched versions

2.0.1
npm html-parse-stringify2 (npm)
<= 2.0.1
None

Description

This affects the package html-parse-stringify before 2.0.1; all versions of package html-parse-stringify2. Sending certain input could cause one of the regular expressions that is used for parsing to backtrack, freezing the process.

References

Published by the National Vulnerability Database Mar 4, 2021
Reviewed Mar 12, 2021
Published to the GitHub Advisory Database Mar 18, 2021
Last updated Sep 12, 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
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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:L

EPSS score

0.300%
(70th percentile)

Weaknesses

CVE ID

CVE-2021-23346

GHSA ID

GHSA-545q-3fg6-48m7

Source code

No known source code
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