CVE-2021-23426

Prototype Pollution

This affects all versions of package Proto. It is possible to inject pollute the object property of an application using Proto by leveraging the merge function.

Affected

Proto

CVSS v3.1 NVD

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 SNYK

5.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS

0.86% chance of exploitation in the next 30 days, 58th percentile

Published

2021-09-01

Updated

2024-09-16

Proof-of-concept exploits (1)

• https://snyk.io/vuln/SNYK-JS-PROTO-1316301

Security advisories

• https://www.npmjs.com/package/Proto
• advisories/GHSA-58g2-9fqr-36q2

References

• CVE Record
• NVD entry