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)

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.009 (60.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-77807: held from 0.009 to 0.009.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

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.