CVE-2026-47086

published 2026-07-16

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 URLAUTH…

Priority P4 19 low 3.5 CVSS 3.1

AV N AC H PR L UI N S C C L I N A N

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
cyrusimap	cyrus_imap	< 3.12.3	3.12.3

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