CVE-2023-54404 Zod - Uncontrolled Resource Consumption

Zod schema-validation library through 4.6.5 contains an uncontrolled resource consumption vulnerability caused by unbounded array validation in $ZodArray, letting attackers exhaust memory by submitting large arrays, exploit requires no length constraint on array schema.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Uncontrolled Resource Consumption
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-770

Vendor fix

Update to a version later than 4.6.5 or apply patches that add length constraints to array schemas.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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