CVE-2026-47083

MEDIUM

Cyrusimap Cyrus Imap < 3.12.3 - Observable Response Discrepancy

Title source: rule

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).

References (2)

Core 2

Core 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

Scores

CVSS v3 4.3

EPSS 0.0019

EPSS Percentile 9.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-204

Status published

Products (1)

cyrusimap/Cyrus IMAP < 3.12.3

Published Jul 16, 2026

Tracked Since Jul 17, 2026