Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

beautifier/js-beautify

              main @ 4f52c49
            

Fixes

CVEs

MEDIUM

Peak severity

50.0%

Coverage

Highlights

ReDoS: 2 prior fixes. Scrutinize any change in this area.

python/jsbeautifier/javascript/tokenizer.py: most-fixed (2 issues). Treat as high-risk during review.

0 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

ReDoS: Two fixes targeted the Python tokenizer's XML regex, indicating a recurring weakness in this component. The regex with nested quantifiers allows exponential backtracking on crafted XML-like input, leading to CPU exhaustion.

ReDoS: The JavaScript tokenizer shares the same XML regex pattern and was fixed in the same commit as the Python version. This indicates the vulnerability is cross-language and requires parallel patching to avoid divergence.