UBUNTU-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...

USN-8556-1: Ruby vulnerabilities

It was discovered that the Net::IMAP client in Ruby did not properly sanitize Symbol arguments passed to IMAP commands. A remote attacker controlling a malicious IMAP server, or able to influence command arguments, could use this to inject arbitrary IMAP commands via CRLF sequences. CVE-2026-4225...

[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...

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-2026-47086

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

CYRUS IMAPD has a vulnerability CVE-2026-47086 affecting Cyrus IMAP up to version 3.12.2. The GENURLAUTH feature allows issuance of URLAUTH tokens by any authenticated user for named mailboxes, bypassing ACLs and enabling reading mail from those mailboxes without granted permissions. The issue is...

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-2026-47085

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-2026-47087

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-2026-47089

CVE-2026-47089 affects Cyrus IMAPD up to version 3.12.2. The LISTRIGHTS function is not restricted to admins, allowing any authenticated user to call LISTRIGHTS on a mailbox they name and discover which principals have what access. This is a data-exposure/privacy issue tied to insufficient access...

PT-2026-60554

Name of the Vulnerable Software and Affected Versions Cyrus IMAP versions prior to 3.12.3 Description An issue exists where tokens issued via the GENURLAUTH command can bypass Access Control Lists ACLs. An authenticated user can generate a URLAUTH token for any specified mailbox, regardless of...

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,...

PT-2026-60550

Name of the Vulnerable Software and Affected Versions Cyrus IMAP versions prior to 3.12.3 Description An issue exists in the vacation "fcc" feature of cyrus-imapd. This feature, used to save a copy of a sent message via a Sieve script, fails to check the destination-mailbox Access Control List AC...

PT-2026-60549

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-2026-47086

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...

ruby4.0 security update

4.0.3-35 - Fix Net::IMAP ResponseReader quadratic complexity vulnerability CVE-2026-42245 Includes core fix plus additional performance optimizations Resolves: RHEL-181675 - Fix Net::IMAP STARTTLS stripping vulnerability CVE-2026-42246 Resolves: RHEL-181767 - Fix Net::IMAP command injection...

ruby security update

3.3.10-13 - Fix DoS via crafted IMAP responses in net-imap. CVE-2026-42245 Resolves: RHEL-181687 - Fix information disclosure via MITM attack bypassing TLS in net-imap. CVE-2026-42246 Resolves: RHEL-181775 - Fix command injection via Symbol arguments in net-imap. CVE-2026-42258 Resolves: RHEL-181...

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-2026-47087

The CVE affects cyrus-imapd (Cyrus IMAP) up to version 3.12.2, where URLAUTH does not honor revoked authorizer access; a URLAUTH URL minted while access was valid remains usable after revocation. This could enable continued access to previously authorized resources. A fix is available in the 3.12...

CVE-2026-47084

CVE-2026-47084 affects Cyrus IMAPD up to version 3.12.2. The LOCALDELETE command bypassed ACL checks, allowing an authenticated but non-admin user to invoke an admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions. The CVSS metrics indicate a base score of 6.5...