GHSA-mrhx-c7xc-m3w5
- Severity
- High
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA KEV
- Not in the cached KEV catalog
- EPSS
- No cached EPSS score
Affected and fixed versions
- Introduced 0 · fixed in 4.6.6
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Zod can exhaust memory while validating oversized constrained collections
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.
Aliases: CVE-2023-54404
Advisory on OSV.dev · published 2026-10-01 · modified 2026-10-23