Prototype Pollution in Property-Expr Project
CVE-2020-7707
The package property-expr before 2.0.3 are vulnerable to Prototype Pollution via the setter function.
Vulnerability class: Prototype Pollution
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.034 (88.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
- Property-Expr Project
- Property-Expr — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- snyk.io/vuln/SNYK-JS-PROPERTYEXPR-598800 (Exploit, Third Party Advisory)
- snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-598857 (Exploit, Third Party Advisory)
- github.com/jquense/expr/commit/df846910915d59f711ce63c1f817815bceab5ff7 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7707?
- CVE-2020-7707 is a critical-severity vulnerability in Property-Expr Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.8/10. Published 2020-08-18.
- How severe is CVE-2020-7707?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-7707 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.