Advisories

Zod 4.6.5 Uncontrolled Resource Consumption via Array Validation

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severity
high
date
Affecting
  • zod <= 4.6.5

  • An affected version range remains undefined

CWE
  • CWE-770 Allocation of Resources Without Limits or Throttling
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
Credit
Axel Habermaier (axel-habermaier), Alessio Della Libera
Description
Zod schema-validation library through 4.6.5 contains an uncontrolled resource consumption vulnerability that allows attackers to exhaust memory by submitting a large array to an application using an array schema without a length constraint. Attackers can exploit the handleArrayResult parse logic in $ZodArray, which accumulates every validation issue for each failing element with no cap or early termination, causing the process to allocate excessive issue objects and crash due to out-of-memory conditions.

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