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).

Classification

CVE ID: CVE-2025-3584

CVSS Base Severity: MEDIUM

CVSS Base Score: 4.8

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected Products

Vendor: Unknown

Product: Newsletter

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 5.23% (scored less or equal to compared to others)

EPSS Date: 2025-06-04 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3584
https://wpscan.com/vulnerability/76937bdd-7ffa-4b5e-ade1-60da095a03a3/

Timeline