CVE-2026-47086
LOW
INFO
Priority: 0.01
BB Relevance:
47/100
Published: 2026-07-16
Modified: 2026-10-24
First seen: 2026-10-29
Status: active
Attack Surface
Network
No Interaction
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
Low
UI:
None
S:
Changed
C:
Low
I:
None
A:
None
Description
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.