Prototype Pollution in Ajv.js Ajv
CVE-2020-15366
An issue was discovered in ajv.validate() in Ajv (aka Another JSON Schema Validator) 6.12.2. A carefully crafted JSON schema could be provided that allows execution of other code by prototype pollution. (While untrusted schemas are recomme…
Vulnerability class: Prototype Pollution
EPSS: 0.023 (81.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Ajv.js Ajv — versions 6.12.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Permissions Required)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Third Party Advisory, Release Notes)
- cve@mitre.org
Frequently asked questions
- What is CVE-2020-15366?
- CVE-2020-15366 is a medium-severity vulnerability in Ajv.js Ajv, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.6/10. Published 2020-07-15.
- How severe is CVE-2020-15366?
- Medium severity. CVSS v3 base score is 5.6 out of 10.
- Is CVE-2020-15366 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.