CVE-2021-34626

Name: CVE-2021-34626
Creator: NVD / NIST
Published: 2021-07-07T13:15:08.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2021-34626 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability in the deleteCustomType function of the WP Upload Restriction WordPress plugin allows low-level authenticated users to delete custom extensions added by administrators. This issue affects versions 2.2.3 and prior.. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

A vulnerability in the deleteCustomType function of the WP Upload Restriction WordPress plugin allows low-level authenticated users to delete custom extensions added by administrators. This issue affects versions 2.2.3 and prior.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.69%

48.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Wp-Upload-Restriction Project	Wp-Upload-Restriction	<= 2.2.3

References

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34626Exploit, Third Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34626Exploit, Third Party Advisory

Timeline

Published: Jul 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34626?

How severe is CVE-2021-34626?

CVE-2021-34626 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34626?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34626?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST