XSS in Quantizor Markdown-To-Jsx

CVE-2024-21535

Versions of the package markdown-to-jsx before 7.4.0 are vulnerable to Cross-site Scripting (XSS) via the src property due to improper input sanitization. An attacker can execute arbitrary code by injecting a malicious iframe element in the markdown.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (40.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-21535?
CVE-2024-21535 is a medium-severity vulnerability in Quantizor Markdown-To-Jsx, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-10-15.
How severe is CVE-2024-21535?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2024-21535 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.