CVE-2023-28409

CRITICALNVD 9.89.8—

9.8

Unrestricted upload of file with dangerous type exists in MW WP Form versions v4.4.2 and earlier, which may allow a remote unauthenticated attacker to upload an arbitrary file.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 91.0%
KEV: Not listed

Published

May 23, 2023

Last Modified

January 31, 2025

References (4)

vultures@jpcerthttps://jvn.jp/en/jp/JVN01093915/
vultures@jpcerthttps://plugins.2inc.org/mw-wp-form/blog/2023/05/08/752/
af854a3a-2127-422b-91ae-364da2661108https://jvn.jp/en/jp/JVN01093915/
af854a3a-2127-422b-91ae-364da2661108https://plugins.2inc.org/mw-wp-form/blog/2023/05/08/752/

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 13× 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.

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Frequently asked(5)

What is CVE-2023-28409?

CVE-2023-28409 is a critical vulnerability published on May 23, 2023. Unrestricted upload of file with dangerous type exists in MW WP Form versions v4.4.2 and earlier, which may allow a remote unauthenticated attacker to upload an arbitrary file.

When was CVE-2023-28409 disclosed?

CVE-2023-28409 was first published in the National Vulnerability Database on May 23, 2023, with the most recent update on January 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-28409 actively exploited?

CVE-2023-28409 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-28409?

CVE-2023-28409 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-28409?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-28409, 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-2023-28409

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-28409?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)