What is CVE-2026-70408?

CVE-2026-70408 is a high-severity vulnerability in Extra Innovation Inc. Acmailer Cgi, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-08-19.

How severe is CVE-2026-70408?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Extra Innovation Inc. Acmailer Cgi

CVE-2026-70408

An incorrect authorization vulnerability exists in acmailer, which may allow a user to create a sub-account that has administrative privileges.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Extra Innovation Inc. Acmailer Cgi
Extra Innovation Inc. Acmailer Db

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

vultures@jpcert.or.jp
vultures@jpcert.or.jp

Frequently asked questions

What is CVE-2026-70408?: CVE-2026-70408 is a high-severity vulnerability in Extra Innovation Inc. Acmailer Cgi, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-08-19.
How severe is CVE-2026-70408?: High severity. CVSS v3 base score is 8.8 out of 10.