CVE-2026-61907CWE-863broken-access-control

CVE-2026-61907

Medium · published September 9, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
11.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00213 · 11.1th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-09T23:17Z
References (4)
https://cyrusimap.org · [email protected]https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html · [email protected]https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html · [email protected]https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html · [email protected]
EPSS history
Timeline
  • 11 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 09 SEP 00:00Z
    An issue was discovered in Cyrus IMAP before 3.12.4
    cvelistv5