CVE-2026-61911

A flaw was found in cyrus-imapd. An authenticated user could install a Sieve script to determine if another user's private mailbox exists. This is achieved by observing the behavior of the fileinto branch during Local Mail Transfer Protocol LMTP delivery. Additionally, this method could allow the...

CVE-2026-61910

A flaw was found in cyrus-imapd. An authenticated user with specific permissions on another user's mailbox could alter its special-use annotation. This manipulation might allow the user to change the shared mailbox's role, potentially causing unintended mail content to be written to it and shared...

CVE-2026-61908

A flaw was found in cyrus-imapd. An authenticated user could exploit this vulnerability by attempting to download a specially crafted JMAP JSON Meta Application Protocol blob ID. This action could lead to reading beyond the intended memory boundary, potentially exposing sensitive information from...

CVE-2026-61915

A flaw was found in cyrus-imapd. An authenticated calendar user could trigger a double-free vulnerability in the Cyrus CalDAV worker. By sending a specially crafted PATCH request that includes PATCH-ACTION="BYPARAM@..." against a resource with two or more properties of the matched kind, the memor...

CVE-2026-61909

A flaw was found in cyrus-imapd. An authenticated DAV Distributed Authoring and Versioning user with some shared access to another user's calendar or address book could read unshared events or contacts. This information disclosure occurs by including specific resource identifiers in a...

[SECURITY] [DLA 4766-1] cyrus-imapd security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4766-1 [email protected] https://www.debian.org/lts/security/ Xavier Guimard September 01, 2026 https://wiki.debian.org/LTS -...

openSUSE 16: cyradm / cyrus-imapd / cyrus-imapd-devel / cyrus-imapd-snmp / etc (openSUSE-SU-2026:21368-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21368-1 advisory. Changes in cyrus-imapd: - Update to 3.8.7 bugfix release - CVE-2026-47081: XAPPLEPUSHSERVICE folder existence oracle and push hijack bsc1271617 ...

Security update for cyrus-imapd (moderate)

openSUSE security update: security update for cyrus-imapd ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21368-1 Rating: moderate References: bsc1271617 bsc1271618 bsc1271619 bsc1271620 bsc1271621 bsc1271622 bsc1271623 bsc1271624 bsc1271625...

Linux Distros Unpatched Vulnerability : CVE-2026-47087

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. URLAUTH does not honor revoked authorizer access. A URLAUTH URL minted while the authorizer...

OPENSUSE-SU-2026:21368-1 Security update for cyrus-imapd

This update for cyrus-imapd fixes the following issues: Changes in cyrus-imapd: - Update to 3.8.7 bugfix release - CVE-2026-47081: XAPPLEPUSHSERVICE folder existence oracle and push hijack bsc1271617 - CVE-2026-47083: ESEARCH cross-user content oracle bsc1271619 - CVE-2026-47082: Vacation "fcc"...

CVE-2026-47081

A flaw was found in Cyrus IMAP cyrus-imapd. An authenticated user could exploit this vulnerability by using the XAPPLEPUSHSERVICE command to determine if specific mailboxes exist on other users' accounts. This could allow the attacker to create Apple Push Notification Service APNS notifications f...

Linux Distros Unpatched Vulnerability : CVE-2026-47083

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 authenticat...

Linux Distros Unpatched Vulnerability : CVE-2026-47082

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation fcc feature skips the destination-mailbox ACL. A user whose vacation Sieve...

EUVD-2026-45009

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URLAUTH token via the GENURLAUTH command for any mailbox they could name, even without read access on it. This would allow reading mail from mailboxes...

DEBIAN-CVE-2026-47086

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URLAUTH token via the GENURLAUTH command for any mailbox they could name, even without read access on it. This would allow reading mail from mailboxes...

DEBIAN-CVE-2026-47089

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. LISTRIGHTS os not limited to users with admin access. An authenticated user could call IMAP LISTRIGHTS against any mailbox they could name and learn what principals had what access to it. This action should have been restricted ...

CVE-2026-47082

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation "fcc" feature skips the destination-mailbox ACL. A user whose vacation Sieve script used :fcc to save a copy of the sent message could deliver vacation auto-reply copies into any mailbox the script could name,...

UBUNTU-CVE-2026-47086

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URLAUTH token via the GENURLAUTH command for any mailbox they could name, even without read access on it. This would allow reading mail from mailboxes...

CVE-2026-47086

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URLAUTH token via the GENURLAUTH command for any mailbox they could name, even without read access on it. This would allow reading mail from mailboxes...

CVE-2026-47081

Cyrus IMAP (cyrus-imapd) up to version 3.12.2 is affected by a XAPPLEPUSHSERVICE folder existence oracle that lets an authenticated IMAP user probe for the existence of arbitrary mailboxes on other users and push notifications for new mail to their own APNS device. This does not expose mailbox co...