CVE-2021-47933 | WordPress MStore API 2.0.6 contains an arbitrary file upload… | CVSS 9.8 CRITICAL

Description

WordPress MStore API 2.0.6 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious files by sending POST requests to the REST API endpoint. Attackers can upload PHP files with arbitrary names to the config_file endpoint to achieve remote code execution on the server.

Metadata

CVE ID: CVE-2021-47933
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-02-01 11:24 UTC
Published: 2026-05-10 12:43 UTC
Last updated: 2026-05-11 13:23 UTC
Primary CWE: CWE-306
Missing Authentication for Critical Function
Vendor / Product: mstore / MStore API
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
mstore	MStore API	—	2.0.6

Weakness (CWE)

CWE	Source	Description
CWE-306	cna	Missing Authentication for Critical Function

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (3)

ExploitDB-50379 https://www.exploit-db.com/exploits/50379
Official Product Homepage https://wordpress.org/plugins/mstore-api/
VulnCheck Advisory: WordPress MStore API 2.0.6 Arbitrary File Upload https://www.vulncheck.com/advisories/wordpress-mstore-api-arbitrary-file-upload