How severe is CVE-2023-23656?

CVE-2023-23656 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-23656 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-23656?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2023-23656 have an EU (EUVD) identifier?

Yes. CVE-2023-23656 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-27743.

When was CVE-2023-23656 published?

CVE-2023-23656 was published on 2024-03-26 and last updated on 2026-06-17.

CVE-2023-23656

CVE-2023-23656 is a critical-severity vulnerability with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-27743
Weakness: CWE-434
Published: 2024-03-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-23656?: 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.
How severe is CVE-2023-23656?: CVE-2023-23656 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-23656 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-23656?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2023-23656 have an EU (EUVD) identifier?: Yes. CVE-2023-23656 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-27743.
When was CVE-2023-23656 published?: CVE-2023-23656 was published on 2024-03-26 and last updated on 2026-06-17.

References

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

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