Medium severity · published Jun 9, 2025
CVE-2025-3581
Newsletter < 8.8.5 - Admin+ Stored XSS via Widget
4.8
CVSS
0.3%
EPSS
No
On KEV
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:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
Newsletter ·
before 8.8.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-3581
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-3581
Exploit
https://wpscan.com/vulnerability/2d96f018-510d-40ab-9e73-76fa44784813/
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