CVE-2026-6594

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.

CVSS v3 7.3 HIGH
CVSS v2.0 7.5 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/sudo-secure/security-research/blob/main/brikcss-merge/prototype-pollution/PoC.md
https://vuldb.com/submit/791805
https://vuldb.com/vuln/358229
https://vuldb.com/vuln/358229/cti

Configurations

No configuration.

History

20 Apr 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-20 02:16

Updated : 2026-04-22 20:22

NVD link : CVE-2026-6594

Mitre link : CVE-2026-6594

CVE.ORG link : CVE-2026-6594

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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