CVE-2023-23656

CRITICALNVD 10.010.0—

10.0

Unrestricted Upload of File with Dangerous Type vulnerability in MainWP MainWP File Uploader Extension.This issue affects MainWP File Uploader Extension: from n/a through 4.1.

CVSS v3: 10.0
EG Score: 10.0(medium)
EPSS: 64.7%
KEV: Not listed

Published

March 26, 2024

Last Modified

April 28, 2026

Advisory Details (1)

Auto-updated May 31, 2026

No patch confirmed yet.

generic

Arbitrary File Upload in WordPress MainWP File Uploader Extension Plugin - Patchstack

https://patchstack.com/database/vulnerability/mainwp-file-uploader-extension/wordpress-mainwp-file-uploader-extension-plugin-4-1-unauthenticated-arbitrary-file-upload-vulnerability?_s_id=cve

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-434Unrestricted Upload of File with Dangerous Type

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 06:09 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch

Frequently asked(5)

What is CVE-2023-23656?

CVE-2023-23656 is a critical vulnerability published on March 26, 2024. Unrestricted Upload of File with Dangerous Type vulnerability in MainWP MainWP File Uploader Extension.This issue affects MainWP File Uploader Extension: from n/a through 4.1.

When was CVE-2023-23656 disclosed?

CVE-2023-23656 was first published in the National Vulnerability Database on March 26, 2024, with the most recent update on April 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-23656 actively exploited?

CVE-2023-23656 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 64.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-23656?

CVE-2023-23656 has a CVSS v3 base score of 10.0 (NVD).

How do I remediate CVE-2023-23656?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-23656, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-23656

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Arbitrary File Upload in WordPress MainWP File Uploader Extension Plugin - Patchstack

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-23656?

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Advisory Details (1)

Frequently asked(5)

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