PT-2021-17103 · Unknown · Merge-Deep

Max-Schaefer · Published 2021-06-02 · Updated 2022-12-02 · CVE-2021-26707

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions merge-deep library versions prior to 3.0.3

Description The issue allows an attacker to trick the library into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, facilitating prototype-pollution attacks against applications using this library.

Recommendations For merge-deep library versions prior to 3.0.3, update to version 3.0.3 or later to resolve the issue.

Fix

Prototype Pollution

Weakness Enumeration

CWE-1321

Related Identifiers

CVE-2021-26707

GHSA-R6RJ-9CH6-G264

Affected Products

Merge-Deep

References · 8

• https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-26707 · Security Note
• https://osv.dev/vulnerability/GHSA-r6rj-9ch6-g264 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-26707 · Vendor Advisory
• https://security.netapp.com/advisory/ntap-20210716-0008 · Note
• https://t.me/cvenotify/16337 · Telegram Post
• https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep · Note
• https://npmjs.com/package/merge-deep · Note