CVE-2025-3583

Newsletter < 8.7.1 - Admin+ Stored XSS

The Newsletter WordPress plugin before 8.7.1 does not sanitise and escape some of its settings, 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).

Affected

Newsletter

CVSS v3.1 NVD

4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 CNA

3.5 LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

EPSS

0.31% chance of exploitation in the next 30 days, 22nd percentile

Published

2025-05-05

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/a6582e14-e21e-48e7-9b4c-0044fb199825/

Security advisories

• https://wpscan.com/vulnerability/a6582e14-e21e-48e7-9b4c-0044fb199825

References

• CVE Record
• NVD entry