brikcss/merge · Security
Deep Merge is Vulnerable to Prototype Pollution Through Lack of Sanitization
- GHSA ID
- GHSA-3jc6-6r48-v6qf
- CVE ID
- CVE-2026-6594
- Severity
- medium
- Published
- Updated
- CVSS
- 7.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- CVSS v3
- 7.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- CVSS v4
- 6.9 · 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
Description
A Prototype Pollution vulnerability was determined in brikcss merge up to 1.3.0. 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.
CWEs
- CWE-94 · Improper Control of Generation of Code ('Code Injection')
- CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')