Critical severity · published Jul 10, 2023
CVE-2023-3077
MStore API < 3.9.8 - Unauthenticated Blind SQLi
9.8
CVSS
5.5%
EPSS
No
On KEV
Description
The MStore API WordPress plugin before 3.9.8 does not sanitise and escape a parameter before using it in a SQL statement, leading to a Blind SQL injection exploitable by unauthenticated users. This is only exploitable if the site owner elected to pay to get access to the plugins' pro features, and uses the woocommerce-appointments plugin.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.5% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
MStore API ·
before 3.9.8 · source: vendor, NVD
Affected product
MA
MStore API
More from MStore API
9.8
CVE-2023-3076
MStore API < 3.9.9 - Unauthenticated Privilege Escalation
9.1
CVE-2026-16038
MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways
8.1
CVE-2026-16030
MStore API < 4.21.0 - Unauthenticated Account Takeover via Firebase Phone Authentication
7.5
CVE-2026-16041
MStore API < 4.21.0 - Unauthenticated Product Review Creation
6.5
CVE-2026-18234
MStore API < 4.21.1 - Subscriber+ Arbitrary Order Payment Bypass via Wallet