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Uncontrolled Resource Consumption in brace-expansion

CVE-2026-69152

  • brace-expansion
High
7.5/10

Summary

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.18, 2.x prior to 2.1.4, 3.x prior to 3.0.6 and 4.x through 5.x prior to 5.0.9, `expand()` does not apply `maxLength` while constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memory or block the event loop. The fix for CVE-2026-14257 is bypassed by the vulnerability. This issue is fixed in versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-400 - Uncontrolled resource consumption

An uncontrolled resource allocation attack (also known as resource exhaustion attack) triggers unauthorized overconsumption of the limited resources in an application, such as memory, file system storage, database connection pool entries, and CPU. This may lead to denial of service for valid users and degradation of the application's functionality as well as that of the host operating system.

References

Advisory Timeline

  • Published