How severe is CVE-2021-33852?

CVE-2021-33852 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-33852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33852?

CVE-2021-33852 affects Metaphorcreations Post Duplicator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33852?

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

When was CVE-2021-33852 published?

CVE-2021-33852 was published on 2022-03-10 and last updated on 2026-06-17.

CVE-2021-33852

CVE-2021-33852 is a medium-severity vulnerability in Metaphorcreations Post Duplicator with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Metaphorcreations Post Duplicator
Published: 2022-03-10
Last modified: 2026-06-17

Description

A cross-site scripting (XSS) attack can cause arbitrary code (JavaScript) to run in a user's browser and can use an application as the vehicle for the attack. The XSS payload given in the "Duplicate Title" text box executes whenever the user opens the Settings Page of the Post Duplicator Plugin or the application root page after duplicating any of the existing posts.

Frequently asked questions

What is CVE-2021-33852?: A cross-site scripting (XSS) attack can cause arbitrary code (JavaScript) to run in a user's browser and can use an application as the vehicle for the attack. The XSS payload given in the "Duplicate Title" text box executes whenever the user opens the Settings Page of the Post Duplicator Plugin or the application root page after duplicating any of the existing posts.
How severe is CVE-2021-33852?: CVE-2021-33852 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-33852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33852?: CVE-2021-33852 affects Metaphorcreations Post Duplicator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33852?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-33852 published?: CVE-2021-33852 was published on 2022-03-10 and last updated on 2026-06-17.

References

https://cybersecurityworks.com/zerodays/cve-2021-33852-stored-cross-site-scripting-in-wordpress-post-duplicator-plugin-2-23.html

Affected products (1)

cpe:2.3:a:metaphorcreations:post_duplicator:2.23:*:*:*:*:wordpress:*:*

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