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).
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.8 MEDIUM
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
WPScanCNA
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CISA-ADPADP
4.8 MEDIUM
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 8%
VendorProductVersion
thenewsletterpluginnewsletter
𝑥
< 8.8.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://wpscan.com/vulnerability/76937bdd-7ffa-4b5e-ade1-60da095a03a3/
https://wpscan.com/vulnerability/76937bdd-7ffa-4b5e-ade1-60da095a03a3/