Vulnerability Details : CVE-2021-3918
Potential exploit
json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Products affected by CVE-2021-3918
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:json-schema_project:json-schema:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3918
1.64%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3918
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
huntr.dev | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-3918
-
The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.Assigned by:
- nvd@nist.gov (Primary)
- security@huntr.dev (Secondary)
References for CVE-2021-3918
-
https://security.netapp.com/advisory/ntap-20250117-0004/
CVE-2021-3918 Json-schema Vulnerability in NetApp Products | NetApp Product Security
-
https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741
Don't allow __proto__ property to be used for schema default/coerce, … · kriszyp/json-schema@22f1461 · GitHubPatch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html
[SECURITY] [DLA 3228-1] node-json-schema security updateMailing List;Third Party Advisory
-
https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9
huntr: Prototype Pollution JavaScript Vulnerability in json-schemaExploit;Issue Tracking;Patch;Third Party Advisory
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