GHSA-mrhx-c7xc-m3w5

Suggest an improvement
Source
https://github.com/advisories/GHSA-mrhx-c7xc-m3w5
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mrhx-c7xc-m3w5/GHSA-mrhx-c7xc-m3w5.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-mrhx-c7xc-m3w5
Aliases
Published
2026-10-01T18:32:46Z
Modified
2026-10-23T18:30:09Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 8.2 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Zod can exhaust memory while validating oversized constrained collections
Details

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.

Database specific 
{
    "cwe_ids":  [
        "CWE-770"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-10-23T18:26:50Z",
    "nvd_published_at":  "2026-10-01T18:17:11Z",
    "severity":  "HIGH"
}
References

Affected packages

npm / zod

Package

Name
zod
View open source insights on deps.dev
Purl
pkg:npm/zod

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.6.6

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mrhx-c7xc-m3w5/GHSA-mrhx-c7xc-m3w5.json"