CVE-2021-4264LinkedIn dustjs prototype pollution
- 6.3MediumCVSS base score
- 1.2%Exploitation in 30 daysEPSS · top 33% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit.
Show the exploits1
References tagged exploit1 reference
- https://github.com/linkedin/dustjs/issues/804 (opens in a new tab)exploitissue-trackingx_transferred
Timeline
Published
- 20 months later
· 20 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 3.1 | Medium6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| VulDBCNA (assigner) | 3.0 | Medium6.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.2% · top 33% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmdustjs-linkedinGHSA-c6rp-wrp9-qr4q (opens in a new tab)
References
References6
- https://vuldb.com/?id.216464 (opens in a new tab)vdb-entryx_transferred
- https://vuldb.com/?ctiid.216464 (opens in a new tab)signaturepermissions-requiredx_transferred
- https://github.com/linkedin/dustjs/issues/804 (opens in a new tab)exploitissue-trackingx_transferred
- https://github.com/linkedin/dustjs/pull/805 (opens in a new tab)issue-trackingx_transferred
- https://github.com/linkedin/dustjs/commit/ddb6523832465d38c9d80189e9de60519ac307c3 (opens in a new tab)patchx_transferred
- https://github.com/linkedin/dustjs/releases/tag/v3.0.0 (opens in a new tab)patchx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-7597 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-c6rp-wrp9-qr4q (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-4264)Record last updated .