What is GHSA-mhrm-79mh-vhfj?

GHSA-mhrm-79mh-vhfj is a security advisory published by GitHub Security Advisories with High severity. The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce...

Which CVE IDs does GHSA-mhrm-79mh-vhfj cover?

GHSA-mhrm-79mh-vhfj covers the following CVE IDs: CVE-2026-16268. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mhrm-79mh-vhfj?

GHSA-mhrm-79mh-vhfj has a CVSS v3 base score of 8.2, published by GitHub Security Advisories.

GHSA-mhrm-79mh-vhfjHighCVSS 8.2

The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce...

Vendor

GitHub Security Advisories

Published

August 6, 2026

Last Modified

August 6, 2026

🔗 CVE IDs covered (1)

CVE-2026-16268 →

📋 Description

The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied URL on the server side, allowing unauthenticated attackers to make the site issue requests to arbitrary internal or external hosts.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-16268
https://wpscan.com/vulnerability/65612dd4-83d8-40c5-8e12-862e9b5f940b
https://github.com/advisories/GHSA-mhrm-79mh-vhfj