CVE-2025-3582: The Newsletter WordPress plugin before 8.85 does not sanitise and escape some of its Form settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks

medium Affects newsletter (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The Newsletter WordPress plugin before 8.85 does not sanitise and escape some of its Form settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks

Package
newsletter (WordPress plugin) WordPress
Affected versions
<8.8.5
Fixed in
8.8.5
Severity
medium  CVSS 4.8
Exploitation
not on CISA KEV · EPSS 0% (17.4th percentile)
Published
2025-06-09
Source
nvd

References

CWE-79
NVD recordnewsletter (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked

Related advisories