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CVE-2024-21535

20
FAUCET Score

CVE-2024-21535 describes a Cross-site Scripting (XSS) vulnerability in versions of the markdown-to-jsx package prior to 7.4.0, affecting products like quantizor. This medium-severity flaw (CVSS 6.1) allows an unauthenticated attacker to execute arbitrary code by injecting a malicious iframe through the 'src' property, requiring user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.4.0CPE matchmatch criteria
cpe:2.3:a:quantizor:markdown-to-jsx:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 42nd percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: markdown-to-jsxFixed in: 7.4.0
redhatvendor investigatingvia redhat_api
Product: Migration Toolkit for VirtualizationFixed in: migration-toolkit-virtualization/mtv-console-plugin-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Data Science (RHODS)Fixed in: rhods/odh-dashboard-rhel8
redhatend of lifevia redhat_api
Product: Node HealthCheck OperatorFixed in: workload-availability/node-remediation-console-rhel8

Vendor Advisories (2)

npmGHSA-4wx3-54gh-9fr9medium

Cross site scripting in markdown-to-jsx

Oct 15, 2024
redhatCVE-2024-21535Moderate

markdown-to-jsx: Cross-site Scripting vulnerability in markdown-to-jsx

Oct 15, 2024

References

github.com / quantizor/markdown-to-jsx/commit/8eb74da825c0d8d2e9508d73c672bcae36ba555a
Patch
security.snyk.io / vuln/SNYK-JS-MARKDOWNTOJSX-6258886
Third Party Advisory