showdown-2.1.0.tgz: 1 vulnerabilities (highest severity is: 5.3)

[mend-bolt-for-github[bot]]

Vulnerable Library - showdown-2.1.0.tgz

A Markdown to HTML converter written in Javascript

Library home page: https://registry.npmjs.org/showdown/-/showdown-2.1.0.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Found in HEAD commit: 128fd449925b98c946919a9dbb251a56811b22ad

Vulnerabilities

CVE	Severity	CVSS	Dependency	Type	Fixed in (showdown version)	Remediation Possible**
CVE-2024-1899	Medium	5.3	showdown-2.1.0.tgz	Direct	N/A	❌

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2024-1899

### Vulnerable Library - showdown-2.1.0.tgz

A Markdown to HTML converter written in Javascript

Library home page: https://registry.npmjs.org/showdown/-/showdown-2.1.0.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Dependency Hierarchy: - :x: **showdown-2.1.0.tgz** (Vulnerable Library)

Found in HEAD commit: 128fd449925b98c946919a9dbb251a56811b22ad

Found in base branch: develop

### Vulnerability Details

An issue in the anchors subparser of Showdownjs versions <= 2.1.0 could allow a remote attacker to cause denial of service conditions.

Publish Date: 2024-02-26

URL: CVE-2024-1899

### CVSS 3 Score Details (5.3)

Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: Low

For more information on CVSS3 Scores, click here.

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[Strohgelaender]

Seems like showdown is unmaintained and we should consider replacing it e.g. with https://github.com/markdown-it/markdown-it

[krusche]

Would be a good idea to replace it with a maintained library. We have custom extension showdown-highlight and showdown-katex and would nee to make sure something similar is also available / possible in https://github.com/markdown-it/markdown-it

[krusche]

https://www.npmjs.com/package/markdown-it-highlightjs and https://www.npmjs.com/package/markdown-it-latex should provide the required support to replace existing extensions.

The current usage of showdown is limited, so replacing it with markdown-it should not be a huge effort for someone with experience in this area

[b-fein]

Replacing it might also solve the currently oldest open issue: #768.

(But potentially break existing maths formulas in problem descriptions.)

[Strohgelaender]

markdown-it-latex also seems unmainted, here https://github.com/Mathpix/mathpix-markdown-it seems like the better option.