CVE-2021-23558

Prototype Pollution

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)

CVSS v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 SNYK

7.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

1.63% chance of exploitation in the next 30 days, 76th percentile

Published

2022-01-28

Updated

2024-09-16

Proof-of-concept exploits (1)

• https://snyk.io/vuln/SNYK-JS-BMOOR-2342622

Security advisories

• b-heilman/bmoor/commit/29b0162cc1dc1791fc060891f568b0ae29bc542b
• https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation
• advisories/GHSA-4m8h-h59m-m34j

References

• CVE Record
• NVD entry