What is CVE-2023-3077?

CVE-2023-3077 is a critical-severity vulnerability in Inspireui Mstore API, classified under CWE-89 SQL INJECTION. CVSS score: 9.8/10. Published 2023-07-10.

How severe is CVE-2023-3077?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-3077 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Inspireui Mstore API

CVE-2023-3077

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.

Published 2023-07-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.055 (92.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.055 · newest: 0.055 · change: 0.000

Affected products

Inspireui Mstore API
Mstore API — versions 0

Public proof-of-concept exploits

References

wpscan.com/vulnerability/9480d0b5-97da-467d-98f6-71a32599a432 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-3077?: CVE-2023-3077 is a critical-severity vulnerability in Inspireui Mstore API, classified under CWE-89 SQL INJECTION. CVSS score: 9.8/10. Published 2023-07-10.
How severe is CVE-2023-3077?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-3077 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.