Marked allows Regular Expression Denial of Service (ReDoS) attacks

Description

Marked prior to version 0.3.17 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to catastrophic backtracking in several regular expressions used for parsing HTML tags and markdown links.

Recommendation

Update the marked package to the latest compatible version. Followings are version details:

• Affected version(s): < 0.3.17
• Patched version(s): 0.3.17

References

• GHSA-p9wx-2529-fp83
• CVE-2018-25110
• CWE-1333
• CAPEC-310
• OWASP 2021-A6

Related Issues

• Regular Expression Denial of Service (REDoS) in Marked - CVE-2021-21306
• jsPDF Bypass Regular Expression Denial of Service (ReDoS) - CVE-2025-29907
• regular expression denial of service (ReDoS) (GHSA-r92x-f52r-x54g) - CVE-2020-26289
• Regular Expression Denial of Service in sshpk - CVE-2018-3737

Tags:

npm

marked