WordPress Plugin Vulnerabilities

Smart Popup by Supsystic < 2.0.2 - Unauthenticated SSRF via MailChimp Groups Lookup

Description

The plugin does not restrict access to its MailChimp interest-group lookup or validate the API key supplied to it, allowing unauthenticated users to make the server open connections to arbitrary internal hosts and ports and infer from response timing which ones are reachable.

Proof of Concept

Affects Plugins

Fixed in 2.0.2

References

Classification

Type
SSRF
OWASP top 10
CWE

Miscellaneous

Original Researcher
Karthik Ramakrishnan
Submitter
Karthik Ramakrishnan
Verified
Yes

Timeline

Publicly Published
2026-10-26 (about 2 days ago)
Added
2026-10-26 (about 1 day ago)
Last Updated
2026-10-26 (about 1 day ago)

Other