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MEDIUM · 4.8

CVE-2025-3581

The Newsletter WordPress plugin before 8.8.5 does not validate and escape some of its Widget options before outputting them back in a page/post where the block is embed, which could allow high privil...

Vulnerability Description

The Newsletter WordPress plugin before 8.8.5 does not validate and escape some of its Widget options before outputting them back in a page/post where the block is embed, 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).

CVSS Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
ThenewsletterpluginNewsletter< 8.8.5

Related Weaknesses (CWE)

CWE-79

References

FAQ

What is CVE-2025-3581?

CVE-2025-3581 is a vulnerability with a CVSS score of 4.8 (MEDIUM). The Newsletter WordPress plugin before 8.8.5 does not validate and escape some of its Widget options before outputting them back in a page/post where the block is embed, which could allow high privil...

How severe is CVE-2025-3581?

CVE-2025-3581 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-3581?

Check the references section above for vendor advisories and patch information. Affected products include: Thenewsletterplugin Newsletter.