What is CVE-2026-86008?

CVE-2026-86008 is a high-severity vulnerability in Mailu, classified under Improper Privilege Management. CVSS score: 7.2/10. Published 2026-10-16.

How severe is CVE-2026-86008?

High severity. CVSS v3 base score is 7.2 out of 10.

Auth bypass in Mailu

CVE-2026-86008

Mailu is a mail server distributed as a set of Docker images. Prior to 8577c929b4ade04d3cd4210cf036601abd793556, a domain manager targeting an administrative account or another domain manager with greater privileges can reset passwords or obtain tokens for that account. This authorization failure allows a domain manager to take over a higher-privileged account and exercise that account's permissions. This vulnerability is addressed by commit 8577c929b4ade04d3cd4210cf036601abd793556.

Vulnerability class: Privilege Escalation

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Mailu — versions < 8577c929b4ade04d3cd4210cf036601abd793556

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-86008?: CVE-2026-86008 is a high-severity vulnerability in Mailu, classified under Improper Privilege Management. CVSS score: 7.2/10. Published 2026-10-16.
How severe is CVE-2026-86008?: High severity. CVSS v3 base score is 7.2 out of 10.