CVE-2025-3581

CWE-79 — Cross-site Scripting (XSS)3 documents3 sources
Severity
4.8MEDIUM
EPSS
0.2%
top 62.31%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Unknown NewsletterThenewsletterplugin Newsletter
Timeline
PublishedJun 9

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 vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NExploitability: 1.7 | Impact: 2.7

Affected Packages2 packages

▶CVEListV5unknown/newsletter< 8.8.5

🔴Vulnerability Details

2
CVEList
Newsletter < 8.8.5 - Admin+ Stored XSS via Widget↗2025-06-09
▶
GHSA
GHSA-f9xh-499r-w9qx: The Newsletter WordPress plugin before 8↗2025-06-09
▶
CVE-2025-3581 (MEDIUM CVSS 4.8) | The Newsletter WordPress plugin bef | cvebase.io