low3.1
CVE-2026-47088
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2.
Impact
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 message's end in memory, and read into the heap, returning the read content to the user.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cyrus IMAP | Cyrus IMAP | through 3.12.2. |
Versions were read from the advisory text. No structured product data has been published for this record yet.