High 7.3Published Apr 19, 2026

CVE-2026-6594brikcss merge prototype pollution

Updated under an hour ago (Oct 26, 2026, 8:20 PM ET)

Does this affect you?

It affects brikcss merge. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for brikcss merge

Exploited in the last 30 days

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: 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
Weakness (CWE): CWE-1321, CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Apr 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

brikcss merge brikcss:merge (from the name)	1.0; 1.1; 1.2; 1.3.0	CNA record

References

References

https://vuldb.com/vuln/358229	vdb-entry, technical-description
https://vuldb.com/vuln/358229/cti	signature, permissions-required
https://vuldb.com/submit/791805	third-party-advisory
https://github.com/sudo-secure/security-research/blob/main/brikcss-merge/prototype-pollution/PoC.md	exploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.