DEBIAN-CVE-2021-3918
Advisory lineage Upstream: 1 Downstream: 1
Upstream
Downstream
Published: 13 Nov 2021, 09:15
Last modified:28 Apr 2026, 20:22
Vulnerability Summary
Overall Risk (default)
high
70/100 CVSS Score
9.8 CRITICAL
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
13 Nov 2021, 09:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated
Description
json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CVSS Metrics
- v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Systems
- debian•node-json-schema
< 0.3.0+~7.0.6-1+deb11u1 | < 0.4.0+~7.0.9-1 | < 0.4.0+~7.0.9-1 | < 0.4.0+~7.0.9-1