CVE-2026-47086An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2.
Updated under an hour ago ()
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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.
- CVSS
- 3.5 LOW (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Jul 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
References
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html
- https://www.cyrusimap.org/imap/download/release-notes/index.html
The CVE record on cve.org NVD's entry
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