CVE-2023-3200Network attack vector

Order-message modification via missing nonce validation

Published Jun 14, 2023 · Updated Apr 8, 2026

Cross-site request forgery in FluxBuilder MStore API 3.9.6 and earlier allows remote attackers to alter new-order messages via forged requests. The mstore_update_new_order_message function accepts a state-changing request without validating a WordPress nonce, so the browser's authenticated session authorizes it. Exploitation requires a site administrator to follow a crafted link or take an equivalent action, and the documented consequence is limited to changing the new-order message.

CVSS severity4.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in FluxBuilder MStore API 3.9.6 and earlier allows remote attackers to alter new-order messages via forged requests. The mstore_update_new_order_message function accepts a state-changing request without validating a WordPress nonce, so the browser's authenticated session authorizes it. Exploitation requires a site administrator to follow a crafted link or take an equivalent action, and the documented consequence is limited to changing the new-order message.

The record

CVE
CVE-2023-3200
Published
Jun 14, 2023
Updated
Apr 8, 2026
Vendor
FluxBuilder
Product
MStore API
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FluxBuilder · MStore APIversion=0 <=3.9.6

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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