This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-47086 →

DEBIAN-CVE-2026-47086

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URL...

Original description

The description as published by the source.

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URLAUTH token (via the GENURLAUTH command) for any mailbox they could name, even without read access on it. This would allow reading mail from mailboxes despite having no granted permissions.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.1-4+deb12u5"}]}]

Debian:13 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.2-1+deb13u2"}]}]

Debian:14 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12.3-1"}]}]

References

advisory security-tracker.debian.org