How severe is CVE-2021-42546?

CVE-2021-42546 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-42546 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42546?

CVE-2021-42546 affects Wpcloudplugins Use-your-drive. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42546?

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

When was CVE-2021-42546 published?

CVE-2021-42546 was published on 2021-12-13 and last updated on 2026-06-17.

CVE-2021-42546

CVE-2021-42546 is a medium-severity vulnerability in Wpcloudplugins Use-your-drive with a CVSS 3.x base score of 4.7. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Wpcloudplugins Use-your-drive
Published: 2021-12-13
Last modified: 2026-06-17

Description

Insufficient Input Validation in the search functionality of Wordpress plugin Use-Your-Drive prior to 1.18.3 allows unauthenticated user to craft a reflected Cross-Site Scripting attack.

Frequently asked questions

What is CVE-2021-42546?: Insufficient Input Validation in the search functionality of Wordpress plugin Use-Your-Drive prior to 1.18.3 allows unauthenticated user to craft a reflected Cross-Site Scripting attack.
How severe is CVE-2021-42546?: CVE-2021-42546 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-42546 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42546?: CVE-2021-42546 affects Wpcloudplugins Use-your-drive. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42546?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42546 published?: CVE-2021-42546 was published on 2021-12-13 and last updated on 2026-06-17.

References

https://www.wpcloudplugins.com/wp-content/plugins/use-your-drive/_documentation/index.html#releasenotes

Affected products (1)

cpe:2.3:a:wpcloudplugins:use-your-drive:*:*:*:*:*:wordpress:*:*

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