CVE-2026-86009
Severity not reportedData quality: partial.
Some fields were not provided by the source.
Mailu is a mail server distributed as a set of Docker images.
Mailu is a mail server distributed as a set of Docker images. Prior to f05aeb8322e2f61096af6b089d61ba6f40587d96, domain managers can enable spoofing for hosted domains they do not control. A potentially malicious domain administrator enables spoofing for another hosted domain and can send emails that are authenticated with DKIM/SPF for domains they should not be able to. This vulnerability is addressed by f05aeb8322e2f61096af6b089d61ba6f40587d96.
CVSS
—
Not reported by the source
Timeline (UTC)
Published: 2026-10-16 17:17
Modified: 2026-10-21 03:17
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 07:03 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/Mailu/Mailu/commit/f05aeb8322e2f61096af6b089d61ba6f40587d96 security-advisories@github.com
- https://github.com/Mailu/Mailu/issues/2686 security-advisories@github.com
- https://github.com/Mailu/Mailu/pull/4072 security-advisories@github.com
- https://github.com/Mailu/Mailu/security/advisories/GHSA-crww-m82r-2wfm security-advisories@github.com
- https://github.com/Mailu/Mailu/issues/2686 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:03 UTC · record ↗