CVE-2026-6594 MEDIUM

CVE-2026-6594: brikcss merge prototype pollution

Vendor Brikcss
Product merge
Weakness CWE-1321
Published April 20, 2026
Last update April 20, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

What the vulnerability does

01Description

A vulnerability was determined in brikcss merge up to 1.3.0. This affects an unknown part. Executing a manipulation of the argument __proto__/constructor.prototype/prototype can lead to improperly controlled modification of object prototype attributes. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

April 20, 2026 CVE published
April 20, 2026 Record updated