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Important: Red Hat Security Advisory: dovecot security update
An update for dovecot is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...
dovecot: Dovecot: Denial of Service via excessive IMAP bracing
A flaw was found in Dovecot. A remote attacker can exploit this vulnerability by sending excessive open braces over the Internet Message Access Protocol IMAP, leading to uncontrolled memory usage. This can cause the affected system to consume memory up to its configured limit, resulting in a Deni...
Important: Red Hat Security Advisory: dovecot security update
An update for dovecot is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...
CVE-2026-47084
A flaw was found in Cyrus IMAP cyrus-imapd. An authenticated user, without administrative privileges, could bypass Access Control List ACL checks by using the LOCALDELETE command. This allowed them to delete mailboxes for which they did not have the necessary permissions, leading to unauthorized...
CVE-2026-47082
A flaw was found in Cyrus IMAP's cyrus-imapd component. A user with low privileges can exploit a vulnerability in the vacation "fcc" feature. By crafting a specific Sieve script, the user can bypass access control lists and deliver vacation auto-reply messages into any mailbox, leading to...
CVE-2026-47085
A flaw was found in Cyrus IMAP cyrus-imapd. A remote attacker could exploit a vulnerability related to URLAUTH token forgery, caused by a missing mailbox key. This could allow the attacker to gain unauthorized read access to a victim's mailbox. The likelihood of exploitation is low due to the...
CVE-2026-47088
A flaw was found in Cyrus IMAP Internet Message Access Protocol daemon, cyrus-imapd. An authenticated IMAP user could exploit a heap exposure vulnerability during nested Multipurpose Internet Mail Extensions MIME comment parsing. By crafting an email message with a specially formed RFC 822 commen...
EUVD-2026-45010
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 had access continued to work after that access was revoked...
EUVD-2026-45011
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is heap exposure in nested MIME comment parsing. An authenticated IMAP user could craft an email message containing an RFC 822 comment ending with a backslash. When parsing the message, the server would read past the...
EUVD-2026-45007
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The LOCALDELETE command bypassed ACL checks. An authenticated but non-admin user could invoke the admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions...
EUVD-2026-45004
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create...
CVE-2026-47087
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 had access continued to work after that access was revoked...
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-2026-47089
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-2026-47085
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. URLAUTH token forgery can occur via a missing mboxkey. If an attacker knew a folder name on the victim's account for which the victim had never issued an auth URL, they could forge a working URLAUTH token by computing an HMAC-SH...
CVE-2026-47088
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is heap exposure in nested MIME comment parsing. An authenticated IMAP user could craft an email message containing an RFC 822 comment ending with a backslash. When parsing the message, the server would read past the...
CVE-2026-47081
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create...
CVE-2026-47084
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The LOCALDELETE command bypassed ACL checks. An authenticated but non-admin user could invoke the admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions...
CVE-2026-47083
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,...
[SECURITY] Fedora 43 Update: roundcubemail-1.6.17-1.fc43
RoundCube Webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking. RoundCube Webmail is written in...