VULNERABILITY INTELLIGENCE
CVE-2026-47086
CVSS score3.5 LOW
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-07-16
Last modified2026-10-24
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
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.
Weakness classification
- cve@mitre.org: CWE-863