CVE-2026-47086
3.5
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| cyrusimap | Cyrus IMAP | 0 < 3.12.3 | affected |
Weaknesses
- CWE-863: CWE-863 Incorrect Authorization
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://www.cyrusimap.org/imap/download/release-notes/index.html
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html
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