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Fencer Vulns
critical 9.8

CVE-2023-3077 json

MStore API < 3.9.8 - Unauthenticated Blind SQLi

published 2023-07-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-43768

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.5%
EPSS 5.5% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known, plus a Nuclei check

Summary

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.

Patch / fix

  • Unknown MStore API 3.9.8

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
23 mo ago

Exploit prediction

5.50% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template MStore API < 3.9.8 - SQL Injection nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/9480d0b5-97da-467d-98f6-71a32599a432 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Unknown MStore API

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.