How severe is CVE-2024-21535?

CVE-2024-21535 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-21535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21535?

CVE-2024-21535 affects Quantizor Markdown-to-jsx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21535?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21535 have an EU (EUVD) identifier?

Yes. CVE-2024-21535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2940.

When was CVE-2024-21535 published?

CVE-2024-21535 was published on 2024-10-15 and last updated on 2026-06-17.

CVE-2024-21535

CVE-2024-21535 is a medium-severity vulnerability in Quantizor Markdown-to-jsx with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-2940
Weakness: CWE-79
Affected product: Quantizor Markdown-to-jsx
Published: 2024-10-15
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2024-21535?: CVE-2024-21535 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-21535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21535?: CVE-2024-21535 affects Quantizor Markdown-to-jsx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21535?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21535 have an EU (EUVD) identifier?: Yes. CVE-2024-21535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2940.
When was CVE-2024-21535 published?: CVE-2024-21535 was published on 2024-10-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:quantizor:markdown-to-jsx:*:*:*:*:*:*:*:*

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