How severe is CVE-2021-34626?

CVE-2021-34626 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-34626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34626?

CVE-2021-34626 affects Wp-upload-restriction Project Wp-upload-restriction. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34626?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-34626 published?

CVE-2021-34626 was published on 2021-07-07 and last updated on 2026-06-17.

CVE-2021-34626

CVE-2021-34626 is a medium-severity vulnerability in Wp-upload-restriction Project Wp-upload-restriction with a CVSS 3.x base score of 4.3. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Wp-upload-restriction Project Wp-upload-restriction
Published: 2021-07-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-34626?: 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.
How severe is CVE-2021-34626?: CVE-2021-34626 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-34626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34626?: CVE-2021-34626 affects Wp-upload-restriction Project Wp-upload-restriction. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34626?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34626 published?: CVE-2021-34626 was published on 2021-07-07 and last updated on 2026-06-17.

References

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34626

Affected products (1)

cpe:2.3:a:wp-upload-restriction_project:wp-upload-restriction:*:*:*:*:*:wordpress:*:*

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