What is CVE-2025-57320?

CVE-2025-57320 is a medium-severity vulnerability in Open-Federation Json-Schema-Editor-Visual, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 6.5/10. Published 2025-09-24.

How severe is CVE-2025-57320?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2025-57320 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Prototype Pollution in Open-Federation Json-Schema-Editor-Visual

CVE-2025-57320

json-schema-editor-visual is a package that provides jsonschema editor. A Prototype Pollution vulnerability in the setData and deleteData function of json-schema-editor-visual versions thru 1.1.1 allows attackers to inject or delete properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.

Vulnerability class: Prototype Pollution

Published 2025-09-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

EPSS exploit prediction

EPSS: 0.003 (23.0th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Open-Federation Json-Schema-Editor-Visual

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/json-sch… (Broken Link)
github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025… (Third Party Advisory)

Frequently asked questions

What is CVE-2025-57320?: CVE-2025-57320 is a medium-severity vulnerability in Open-Federation Json-Schema-Editor-Visual, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 6.5/10. Published 2025-09-24.
How severe is CVE-2025-57320?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-57320 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.