CVE-2025-3581
Last modified
CVE-2025-3581 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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).. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Thenewsletterplugin | Newsletter | < 8.8.5 |
References
- https://wpscan.com/vulnerability/2d96f018-510d-40ab-9e73-76fa44784813/Exploit, Third Party Advisory
- https://wpscan.com/vulnerability/2d96f018-510d-40ab-9e73-76fa44784813/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Scan your code nowSource: NVD / NIST