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Fencer Vulns
medium 4.3

CVE-2023-3131 json

MStore API < 3.9.7 - Subscriber+ Unauthorized Settings Update

published 2023-07-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-43816

cvss
4.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

The MStore API WordPress plugin before 3.9.7 does not secure most of its AJAX actions by implementing privilege checks, nonce checks, or a combination of both.

Patch / fix

  • Unknown MStore API 3.9.7

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
23 mo ago

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/970735f1-24bb-441c-89b6-5a0959246d6c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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.