CVE-2021-23434

Prototype Pollution

This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.

Affected

object-path

CVSS v3.1 NVD

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

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

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

1.90% chance of exploitation in the next 30 days, 79th percentile

Published

2021-08-27

Updated

2024-09-16

Proof-of-concept exploits (2)

• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423
• https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453

Security advisories

• mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9eb
• https://lists.debian.org/debian-lts-announce/2023/01/msg00031.html
• advisories/GHSA-v39p-96qg-c8rf

References

• CVE Record
• NVD entry