SEPTEMBER 15, 2026
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Case File

CVE-2026-61907

MEDIUM · CVSS 4.3 EPSS 0.35%

Source: NVD + CISA KEV + EPSS · Published 2026-09-09 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

Cyrus IMAP versions prior to 3.12.4 are vulnerable to a JMAP snooze bypass that allows authenticated users with insert permissions on a snoozed mailbox to insert emails into other users' inboxes or known mailboxes, circumventing access control lists (ACLs). This could lead to unauthorized access to sensitive information and potential data leakage. Organizations using affected versions should prioritize patching to mitigate the risk of unauthorized email manipulation.

CVE
CVE-2026-61907
Severity
MEDIUM
CVSS
4.3
EPSS
0.35%

Original NVD Description

An issue was discovered in Cyrus IMAP before 3.12.4. JMAP snooze bypasses the destination-mailbox ACL. An authenticated user with insert permissions on another user's snoozed mailbox could cause insertion of mail to that user's inbox, or any other of their mailboxes whose id was known to the user, despite having no insert permissions to the target mailbox.