CVE-2021-4264

LinkedIn dustjs prototype pollution

HIGH
8.8
CVSS Score
Published: December 21, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:19 AM UTC
1 product affected across 1 vendorDustjs

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Severity
HIGH8.8
Exploit prediction
EPSS 1%

Description

A vulnerability was found in LinkedIn dustjs up to 2.x and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.0.0 is able to address this issue. The name of the patch is ddb6523832465d38c9d80189e9de60519ac307c3. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216464.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.0.02.x
Affected range stops below 3.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (6)

ExploitIssue TrackingThird Party Advisory
https://github.com/linkedin/dustjs/issues/804
Issue TrackingExploitPatchThird Party Advisory
https://github.com/linkedin/dustjs/pull/805
SignaturePermissions RequiredVDB Entry
https://vuldb.com/?ctiid.216464
VDB EntryThird Party Advisory
https://vuldb.com/?id.216464

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1321

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