CVE-2026-16268 — HIGH (8.2)

Vulnerability 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.

CVSS Score

8.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

HIGH

Availability

NONE

Related Weaknesses (CWE)

CWE-918

References

https://wpscan.com/vulnerability/65612dd4-83d8-40c5-8e12-862e9b5f940b/

FAQ

What is CVE-2026-16268?

CVE-2026-16268 is a vulnerability with a CVSS score of 8.2 (HIGH). 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...

How severe is CVE-2026-16268?

CVE-2026-16268 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-16268?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.