WordPress Plugin Vulnerabilities

Simple User Registration <= 6.9 - Subscriber+ Arbitrary Email Sending via wpr_send_email_to_user

Description

The plugin does not perform any capability or nonce check on one of its AJAX actions, allowing any authenticated user, such as a subscriber, to make the site send arbitrary HTML emails to arbitrary recipients from its own mail system, which can be abused to relay phishing carrying the site's identity and domain reputation.

Proof of Concept

Affects Plugins

No known fix

References

Classification

Type
NO AUTHORISATION
CWE

Miscellaneous

Original Researcher
Yaswanth Reddy Sunkara
Submitter
Yaswanth Reddy Sunkara
Verified
Yes

Timeline

Publicly Published
2026-10-08 (about 2 days ago)
Added
2026-10-01 (about 9 days ago)
Last Updated
2026-10-01 (about 9 days ago)

Other