LinkedIn dustjs up to 2.x prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in LinkedIn dustjs up to 2.x and classified as problematic. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a prototype pollution vulnerability. Using CWE to declare the problem leads to CWE-1321. 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. Impacted is confidentiality, integrity, and availability.

The weakness was shared 12/21/2022. The advisory is shared for download at This vulnerability is handled as CVE-2021-4264. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

The exploit is available at It is declared as proof-of-concept.

Upgrading to version 3.0.0 eliminates this vulnerability. The upgrade is hosted for download at Applying the patch ddb6523832465d38c9d80189e9de60519ac307c3 is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version.






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍


Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
ATT&CK: T1059

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: dustjs 3.0.0
Patch: ddb6523832465d38c9d80189e9de60519ac307c3


12/21/2022 🔍
12/21/2022 +0 days 🔍
12/21/2022 +0 days 🔍
01/21/2023 +31 days 🔍


Advisory: ddb6523832465d38c9d80189e9de60519ac307c3
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-4264 (🔍)
scip Labs:


Created: 12/21/2022 05:30 PM
Updated: 01/21/2023 05:23 PM
Changes: 12/21/2022 05:30 PM (45), 12/24/2022 03:02 PM (3), 01/21/2023 05:15 PM (3), 01/21/2023 05:23 PM (1)
Complete: 🔍


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