How severe is CVE-2026-77807?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Acyba Acymailing – An Ultimate Newsletter Plugin And Marketing Automation Solution For WordPress

CVE-2026-77807

The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 11.0.4 via the `user[name]` Parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires "Embed images" option in AcyMailing configuration being enabled.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Acyba Acymailing – An Ultimate Newsletter Plugin And Marketing Automation Solution For Wordpress

Weakness classification (CWE)

CWE-22 — Path Traversal

References

Frequently asked questions

What is CVE-2026-77807?: CVE-2026-77807 is a high-severity vulnerability in Acyba Acymailing – An Ultimate Newsletter Plugin And Marketing Automation Solution For WordPress, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-09-11.
How severe is CVE-2026-77807?: High severity. CVSS v3 base score is 7.5 out of 10.