CVE-2026-61907
published 2026-09-09CVE-2026-61907: 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…
PriorityP421medium4.3CVSS 3.1
AVNACLPRLUINSUCNILAN
EPSS
0.21%
11.6th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cyrusimap | cyrus_imap | < 3.8.8 | 3.8.8 |
| cyrusimap | cyrus_imap | >= 3.11.0 < 3.12.4 | 3.12.4 |
| cyrusimap | cyrus_imap | >= 3.9.0 < 3.10.4 | 3.10.4 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
vendor_redhat4.3MEDIUM
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Red Hat
cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL
vendor_redhat·2026-09-09·CVSS 4.3
CVE-2026-61907 [MEDIUM] cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL
cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL
No description is available for this CVE.
GHSA
An issue was discovered in Cyrus IMAP before 3.12.4.
ghsa_unreviewed·2026-09-09
CVE-2026-61907 [MEDIUM] CWE-863 An issue was discovered in Cyrus IMAP before 3.12.4.
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-61907 cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL [fedora-all]
bugzilla·2026-09-10·CVSS 4.3
CVE-2026-61907 [MEDIUM] CVE-2026-61907 cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL [fedora-all]
CVE-2026-61907 cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-61907 cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL
bugzilla·2026-08-31·CVSS 4.3
CVE-2026-61907 [MEDIUM] CVE-2026-61907 cyrus-imapd: cyrus-imapd: JMAP snooze bypasses destination-mailbox ACL
CVE-2026-61907 cyrus-imapd: cyrus-imapd: JMAP snooze bypasses 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.
2026-09-09
Published