What is CVE-2026-27543?

CVE-2026-27543 is a high-severity vulnerability in Fluxbuilder Mstore Api, classified under Incorrect Privilege Assignment. CVSS score: 8.1/10. Published 2026-08-13.

How severe is CVE-2026-27543?

High severity. CVSS v3 base score is 8.1 out of 10.

Privilege escalation in Fluxbuilder Mstore Api

CVE-2026-27543

Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Fluxbuilder Mstore Api — versions n/a

Weakness classification (CWE)

CWE-266 — Incorrect Privilege Assignment

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-27543?: CVE-2026-27543 is a high-severity vulnerability in Fluxbuilder Mstore Api, classified under Incorrect Privilege Assignment. CVSS score: 8.1/10. Published 2026-08-13.
How severe is CVE-2026-27543?: High severity. CVSS v3 base score is 8.1 out of 10.