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).
Published: 2025-06-09
Score: 4.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-17435 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).
History

Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00027}

 epss

{'score': 0.0003}

Thu, 12 Jun 2025 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Thenewsletterplugin
Thenewsletterplugin newsletter
Weaknesses CWE-79
CPEs cpe:2.3:a:thenewsletterplugin:newsletter:*:*:*:*:*:wordpress:*:*
Vendors & Products Thenewsletterplugin
Thenewsletterplugin newsletter

Tue, 10 Jun 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 09 Jun 2025 06:15:00 +0000

Type Values Removed Values Added
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).
Title Newsletter < 8.8.5 - Admin+ Stored XSS via Widget
References

Subscriptions

Thenewsletterplugin Newsletter
cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2025-06-10T15:13:27.616Z

Reserved: 2025-04-14T11:40:10.876Z

Link: CVE-2025-3581

cve-icon Vulnrichment

Updated: 2025-06-10T15:13:22.301Z

cve-icon NVD

Status : Analyzed

Published: 2025-06-09T06:15:25.067

Modified: 2025-06-12T16:16:47.417

Link: CVE-2025-3581

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses