PT-2026-33688 · Npm · Brikcss

Sudosme · Published 2026-04-20 · Updated 2026-04-20 · CVE-2026-6594

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions brikcss versions prior to 1.3.1

Description A Prototype Pollution issue exists where manipulating the argument proto /constructor.prototype/prototype allows for improperly controlled modification of object prototype attributes. This can be executed remotely.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Code Injection

Prototype Pollution

Weakness Enumeration

CWE-94

CWE-1321

Related Identifiers

CVE-2026-6594

GHSA-3JC6-6R48-V6QF

Affected Products

Brikcss

References · 7

• 🔥 https://github.com/sudo-secure/security-research/blob/main/brikcss-merge/prototype-pollution/PoC.md · Exploit
• https://osv.dev/vulnerability/GHSA-3jc6-6r48-v6qf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6594 · Security Note
• https://github.com/brikcss/merge · Note
• https://vuldb.com/vuln/358229/cti · Note
• https://vuldb.com/submit/791805 · Note
• https://vuldb.com/vuln/358229 · Note