CVE-2021-43308

Public Exploit
Exponential ReDoS in markdown-link-extractor

Description

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the markdown-link-extractor npm package, when an attacker is able to supply arbitrary input to the module's exported function

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.72% Top 30%
Third-Party Advisory jfrog.com
Affected: markdown-link-extractor markdown-link-extractor
Published at:
Updated at:

References

Link Tags
https://research.jfrog.com/vulnerabilities/markdown-link-extractor-redos-xray-211350/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-43308?
CVE-2021-43308 has been scored as a medium severity vulnerability.
How to fix CVE-2021-43308?
To fix CVE-2021-43308, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43308 being actively exploited in the wild?
It is possible that CVE-2021-43308 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-43308?
CVE-2021-43308 affects markdown-link-extractor markdown-link-extractor.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.