Prototype Pollution in Merge-deep_project Merge-deep
CVE-2021-26707
The merge-deep library before 3.0.3 for Node.js can be tricked into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, thus facilitating prototype-…
Vulnerability class: Prototype Pollution
EPSS: 0.019 (77.4th percentile) — read the EPSS interpretation.
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.
Affected products
- Merge-deep_project Merge-deep
- Netapp E-series_performance_analyzer
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Product, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-26707?
- CVE-2021-26707 is a critical-severity vulnerability in Merge-deep_project Merge-deep, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.8/10. Published 2021-06-02.
- How severe is CVE-2021-26707?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-26707 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.