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Vulnerability Intelligence
Miggo AI
Miggo AIMiggo AI
RubyRuby| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| sisimai | rubygems | < 4.25.14p12 | 4.25.14p12 |
Miggo AIRoot Cause AnalysisThe vulnerability stems from two regex patterns in the to_plain method:
%r|<head>.+</head>|im - Greedy .+ between <head> tags causes excessive backtracking on malformed/nested content.%r|<style.+?>.+</style>|im - The outer .+? and inner .+ create ambiguity in matching style tag boundaries.
The patch replaced these with non-greedy quantifiers (.*?), confirming the root cause. The CWE-1333 classification and exploit example further validate the regex inefficiency in this specific function.Ongoing coverage of React2Shell