Prototype Pollution in Substack Minimist
CVE-2020-7598
minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.
Vulnerability class: Prototype Pollution
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.019 (79.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Substack Minimist
- openSUSE Leap — versions 15.1
- Minimist — versions All versions prior to version 1.2.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- snyk.io/vuln/SNYK-JS-MINIMIST-559764 (Exploit, Patch, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7598?
- CVE-2020-7598 is a medium-severity vulnerability in Substack Minimist, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.6/10. Published 2020-03-11.
- How severe is CVE-2020-7598?
- Medium severity. CVSS v3 base score is 5.6 out of 10.
- Is CVE-2020-7598 known to be exploited?
- 22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.