Prototype Pollution in Express-Mock-Middleware Project
CVE-2020-7616
express-mock-middleware through 0.0.6 is vulnerable to Prototype Pollution. Exported functions by the package can be tricked into adding or modifying properties of the `Object.prototype`. Exploitation of this vulnerability requires creation of a new directory where an attack code can be placed which will then be exported by `express-mock-middleware`. As such, this is considered to be a low risk.
Vulnerability class: Prototype Pollution
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (68.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Express-Mock-Middleware Project
- Express-Mock-Middleware — versions All versions including 0.0.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- snyk.io/vuln/SNYK-JS-EXPRESSMOCKMIDDLEWARE-564120 (Exploit, Third Party Advisory)
- github.com/LingyuCoder/express-mock-middleware/blob/master/lib/index.js (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7616?
- CVE-2020-7616 is a medium-severity vulnerability in Express-Mock-Middleware Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.3/10. Published 2020-04-07.
- How severe is CVE-2020-7616?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-7616 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.