CyberRota Analysis
AI-GeneratedThe brace-expansion function in versions up to 5.0.7 is vulnerable to denial of service due to memory exhaustion, allowing attackers to crash applications by exploiting unbounded string lengths while keeping the result count under the default limit. This vulnerability affects any application that processes attacker-controlled strings through the expand() function, including those using minimatch or glob patterns. Developers and system administrators using affected versions should prioritize upgrading to version 5.0.8 or later to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
brace-expansion through 5.0.7 is vulnerable to denial of service via memory exhaustion. The expand() function limits the number of results with a max option (default 100,000) but does not bound the length of each result string. By chaining multiple brace groups, an attacker keeps the result count under the limit while making each result progressively longer, so total memory scales with both count and string length until the process hits a fatal, uncatchable out-of-memory error. About 7.5 KB of input ('{a,b}'.repeat(1500)) crashes a default Node.js process. Any application that passes attacker-influenced strings to brace-expansion.expand() - directly or transitively via minimatch / glob brace patterns - can be crashed by a small request. Fixed in 5.0.8 by adding a maxLength option (default 4,000,000) that bounds accumulated output and intermediate arrays.