CVE-2025-3581 - CVE House
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Status published Unknown CVE-2025-3581

Newsletter < 8.8.5 - Admin+ Stored XSS via Widget

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).

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Dmitrii Ignatyev
  • WPScan

References

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Affected Vendor

Affected Software

Newsletter
Vulnerable Versions:
0

Timeline

Official Publish: June 9th, 2025
Last Modified: June 10th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.