Prototype Pollution in Bmoor Project
CVE-2021-23558
The package bmoor before 0.10.1 are vulnerable to Prototype Pollution due to missing sanitization in set function. **Note:** This vulnerability derives from an incomplete fix in [CVE-2020-7736](https://security.snyk.io/vuln/SNYK-JS-BMOOR-598664)
Vulnerability class: Prototype Pollution
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.016 (75.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- snyk.io/vuln/SNYK-JS-BMOOR-2342622 (Exploit, Third Party Advisory)
- github.com/b-heilman/bmoor/commit/29b0162cc1dc1791fc060891f568b0ae29bc542b (Patch, Third Party Advisory)
- snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-23558?
- CVE-2021-23558 is a high-severity vulnerability in Bmoor Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.3/10. Published 2022-01-28.
- How severe is CVE-2021-23558?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2021-23558 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.