How severe is CVE-2025-3584?

CVE-2025-3584 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-3584 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3584?

CVE-2025-3584 affects Thenewsletterplugin Newsletter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3584?

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

Does CVE-2025-3584 have an EU (EUVD) identifier?

Yes. CVE-2025-3584 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16699.

When was CVE-2025-3584 published?

CVE-2025-3584 was published on 2025-06-03 and last updated on 2026-06-17.

CVE-2025-3584

CVE-2025-3584 is a medium-severity vulnerability in Thenewsletterplugin Newsletter with a CVSS 3.x base score of 4.8. 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 4.8)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16699
Weakness: CWE-79
Affected product: Thenewsletterplugin Newsletter
Published: 2025-06-03
Last modified: 2026-06-17

Description

The Newsletter WordPress plugin before 8.8.2 does not sanitise and escape some of its Subscription settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Frequently asked questions

What is CVE-2025-3584?: The Newsletter WordPress plugin before 8.8.2 does not sanitise and escape some of its Subscription settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
How severe is CVE-2025-3584?: CVE-2025-3584 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-3584 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3584?: CVE-2025-3584 affects Thenewsletterplugin Newsletter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3584?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3584 have an EU (EUVD) identifier?: Yes. CVE-2025-3584 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16699.
When was CVE-2025-3584 published?: CVE-2025-3584 was published on 2025-06-03 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/76937bdd-7ffa-4b5e-ade1-60da095a03a3/

Affected products (1)

cpe:2.3:a:thenewsletterplugin:newsletter:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Thenewsletterplugin Newsletter

CVE-2020-35933 — Medium (CVSS 6.5): A Reflected Authenticated Cross-Site Scripting (XSS) vulnerability in the Newsletter plugin before 6.8.2 for WordPress…
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CVE-2023-4772 — Medium (CVSS 6.4): The Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'newsletter_form' shortcode in…
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