This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-47088 →

DEBIAN-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...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.1-4+deb12u5"}]}]

Debian:13 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.2-1+deb13u2"}]}]

Debian:14 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12.3-1"}]}]

References

advisory security-tracker.debian.org