AIKIDO-2026-456054
brace-expansion is vulnerable to Denial of Service (DoS)
75
High Risk
This Affects:
brace-expansionTL;DR
The brace-expansion parser can produce excessive intermediate output when handling certain crafted brace patterns, growing memory and CPU use well beyond what the input size would suggest. A malformed or deeply repeated brace sequence can force the parser to keep expanding before returning, delaying callers on a single call. The fix bounds the parser's internal expansion to prevent this unchecked growth.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
brace-expansion is vulnerable to Denial of Service (DoS) in versions 0.0.1 - 1.1.18, 2.0.0 - 2.1.4, 3.0.0 - 3.0.6 and 4.0.0 - 5.0.9.
How to fix this
Upgrade the brace-expansion library to the patch version.
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