Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXFqM2YtOWdtcS1md3Y1

Cross-Site Scripting in simple-markdown

Versions of simple-markdown prior to 0.4.4 are vulnerable to Cross-Site Scripting. Due to insufficient input sanitization the package may render output containing malicious JavaScript. This vulnerability can be exploited through input of links containing data or VBScript URIs and a base64-encoded payload.

Recommendation

Upgrade to version 0.4.4 or later.

Permalink: https://github.com/advisories/GHSA-qj3f-9gmq-fwv5
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXFqM2YtOWdtcS1md3Y1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 5 years ago
Updated: almost 2 years ago

CVSS Score: 6.1
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Percentage: 0.00148
EPSS Percentile: 0.51503

Identifiers: GHSA-qj3f-9gmq-fwv5, CVE-2019-9844
References:

• https://nvd.nist.gov/vuln/detail/CVE-2019-9844
• https://github.com/Khan/simple-markdown/pull/63
• https://github.com/advisories/GHSA-qj3f-9gmq-fwv5
• https://www.npmjs.com/advisories/815
• https://lists.fedoraproject.org/archives/list/[email protected]/message/JFLP3KJVSV5VWMNEBRXLGRVYFXOV5KOG/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/KZG2I7VH7WLSEUQ77KYP5CRAVFT2RK2U/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/O5EFW655O3BXZYAPB65XEREXB2DSNSOT/
• https://www.npmjs.com/package/simple-markdown/v/0.4.4

Repository: https://github.com/Khan/simple-markdown
Blast Radius: 17.8

Affected Packages