CVE-2026-47083

State: Published
Severity: 4.3 Medium
Published: Jul 16, 2026
Updated: Jul 16, 2026
Reserved: May 18, 2026

Description

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an ESEARCH cross-user content oracle. By using the ESEARCH command, an authenticated IMAP user could enumerate folder names under any account they could name. Search would return UIDs of messages matching the search, creating a content oracle (without allowing arbitrary reads of the target's content).

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	mitre

Weaknesses

CWE-204 Observable Response Discrepancy

Affected Products

Product	Versions
Cyrus IMAPcyrusimap	before 3.12.3Affected

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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