CVE-2026-47086

LOW SEVERITY

CVSS Score & Metrics

Base Score

3.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

July 16, 2026

Last Modified

July 16, 2026

CWE ID

CWE-863

Source

NVD

Vendor

cyrusimap

Product

Cyrus IMAP

External 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

CVE-2026-47086

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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