What is CVE-2026-81783?

CVE-2026-81783 is a high-severity vulnerability in Mailmunch – Grow Your Email List, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.1/10. Published 2026-09-10.

How severe is CVE-2026-81783?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Mailmunch – Grow Your Email List

CVE-2026-81783

Subscriber Broken Authentication in MailMunch – Grow your Email List <= 3.2.5 versions.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

Affected products

Mailmunch – Grow Your Email List

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-81783?: CVE-2026-81783 is a high-severity vulnerability in Mailmunch – Grow Your Email List, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.1/10. Published 2026-09-10.
How severe is CVE-2026-81783?: High severity. CVSS v3 base score is 7.1 out of 10.