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Advisories

nanoid before 5.1.6 Infinite Loop via Zero Size in customAlphabet and customRandom

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severity
medium
date
Affecting

  • nanoid >= 0, < 5.1.6

CWE
  • CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Description
nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.

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