CVE-2026-86009

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...

CVE-2026-86009

The Mailu mail server, distributed as a set of Docker images, contains a vulnerability where domain managers can enable spoofing for hosted domains they do not control. Due to this improper authorization (CWE-285, CWE-863), a malicious administrator can authorize spoofing for another hosted domai...

CVE-2026-86009 Mailu: Domain managers can allow themselves to spoof on other hosted domains they should not control

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...

CVE-2026-86009 Mailu: Domain managers can allow themselves to spoof on other hosted domains they should not control

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...

CVE-2026-86008 Mailu domain managers can take over higher-privileged accounts

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...

EUVD-2026-102921

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...

CVE-2026-86008 Mailu domain managers can take over higher-privileged accounts

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...

CVE-2026-86008

The Mailu mail server, distributed as Docker images, contains an authorization failure (CWE-285, CWE-269) in versions prior to commit 8577c929b4ade04d3cd4210cf036601abd793556 . A domain manager can exploit this flaw to target an administrative account or another domain manager with higher privile...

PT-2026-115658

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...

PT-2026-115659

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...

CVE-2026-85751

Mailu is a mail server distributed as a set of Docker images. From Mailu 2.0 until 2024.06.55 and prior to Mailu helm-charts 2.7.3, deployments with PROXYAUTHWHITELIST configured but REALIPHEADER unset trusted a client-controlled X-Forwarded-By header for header-based proxy authentication. The...

CVE-2026-85751 Mailu: Authentication bypass in header-based proxy authentication via spoofable `X-Forwarded-By` trust

Mailu is a mail server distributed as a set of Docker images. From Mailu 2.0 until 2024.06.55 and prior to Mailu helm-charts 2.7.3, deployments with PROXYAUTHWHITELIST configured but REALIPHEADER unset trusted a client-controlled X-Forwarded-By header for header-based proxy authentication. The...

CVE-2026-85751

Mailu is a mail server distributed as a set of Docker images. In deployments where PROXY_AUTH_WHITELIST was configured but REAL_IP_HEADER was unset (Mailu 2.0 through 2024.06.54; helm-charts prior to 2.7.3), nginx trusted a client-controlled X-Forwarded-By header for proxy authentication. The pro...

CVE-2026-85751 Mailu: Authentication bypass in header-based proxy authentication via spoofable `X-Forwarded-By` trust

Mailu is a mail server distributed as a set of Docker images. From Mailu 2.0 until 2024.06.55 and prior to Mailu helm-charts 2.7.3, deployments with PROXYAUTHWHITELIST configured but REALIPHEADER unset trusted a client-controlled X-Forwarded-By header for header-based proxy authentication. The...

EUVD-2026-83975

Mailu is a mail server distributed as a set of Docker images. From Mailu 2.0 until 2024.06.55 and prior to Mailu helm-charts 2.7.3, deployments with PROXYAUTHWHITELIST configured but REALIPHEADER unset trusted a client-controlled X-Forwarded-By header for header-based proxy authentication. The...

CVE-2026-85751 Mailu: Authentication bypass in header-based proxy authentication via spoofable `X-Forwarded-By` trust

Mailu is a mail server distributed as a set of Docker images. From Mailu 2.0 until 2024.06.55 and prior to Mailu helm-charts 2.7.3, deployments with PROXYAUTHWHITELIST configured but REALIPHEADER unset trusted a client-controlled X-Forwarded-By header for header-based proxy authentication. The...

PT-2026-96145

Name of the Vulnerable Software and Affected Versions Mailu versions 2.0 through 2024.06.54 Mailu helm-charts versions prior to 2.7.3 Description Deployments configured with PROXY AUTH WHITELIST but without REAL IP HEADER set trust a client-controlled X-Forwarded-By header for proxy authenticatio...

CVE-2026-85751: Authentication Bypass by Spoofing

Mailu is a mail server distributed as a set of Docker images. From Mailu 2.0 until 2024.06.55 and prior to Mailu helm-charts 2.7.3, deployments with PROXYAUTHWHITELIST configured but REALIPHEADER unset trusted a client-controlled X-Forwarded-By header for header-based proxy authentication. The...

CVE-2026-49217

Mailu is a mail server as a set of Docker images. Prior to version 2024.06.52, a missing authorization check in the Mailu admin REST API allows any unauthenticated attacker to remove any potential IP restriction or update the comment field from any existing user token provided the REST API is...

CVE-2026-49217

Mailu , a mail server distributed as Docker images, is affected by a missing authorization check in its admin REST API prior to version 2024.06.52 . When the REST API is enabled, an unauthenticated remote attacker can remove IP restrictions or modify the comment field on any existing user token v...