AIKIDO-2025-10753
markdown-to-jsx is vulnerable to Regular Expression Denial of Service (ReDoS)
30
Low Risk
This Affects:
markdown-to-jsxTL;DR
Affected versions of this package are vulnerable to regular expression denial-of-service (ReDoS) attacks due to the use of inefficient regex-based parsing for inline formatting. Crafted markdown input could trigger excessive backtracking, leading to performance degradation or application hangs. The fix replaces the regex-based parser with a custom iterative scanner that runs in linear time and is immune to ReDoS attacks, while also improving handling of nested and escaped formatting.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
markdown-to-jsx is vulnerable to Regular Expression Denial of Service (ReDoS) in versions 1.0.0 - 7.7.17.
How to fix this
Upgrade the markdown-to-jsx library to the patch version.
Are You Affected?
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SOC 2Compliant
ISO 27001Compliant