CVE-2026-104658

The Linux live-update apply helper hmailserver-update of Progressive Robot hMailServer 6.3.4 and 6.3.5 runs as root on a request file written by the unprivileged hmailserver service account, and took from that request the program used to verify an AppImage update's signature and the systemd unit ...

CVE-2026-104658 Reliance on Untrusted Inputs in a Security Decision in hMailServer

The Linux live-update apply helper hmailserver-update of Progressive Robot hMailServer 6.3.4 and 6.3.5 runs as root on a request file written by the unprivileged hmailserver service account, and took from that request the program used to verify an AppImage update's signature and the systemd unit ...

EUVD-2026-94832

The Linux live-update apply helper hmailserver-update of Progressive Robot hMailServer 6.3.4 and 6.3.5 runs as root on a request file written by the unprivileged hmailserver service account, and took from that request the program used to verify an AppImage update's signature and the systemd unit ...

CVE-2026-104658

Progressive Robot hMailServer versions 6.3.4 and 6.3.5 are vulnerable to a privilege escalation flaw in the hmailserver-update helper. The helper runs as root but processes a request file written by the unprivileged hmailserver service account. It improperly uses the program path for AppImage sig...