Debian/dovecot: medium 5.3
A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU t
Action: Upgrade dovecot to 1:2.4.1+dfsg1-6+deb13u4 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:2.4.1+dfsg1-6+deb13u4 | - |
Fixed versions
| 1:2.4.1+dfsg1-6+deb13u4 |
Sources
- osv: DEBIAN-CVE-2026-27859#Debian:13/dovecot
- https://security-tracker.debian.org/tracker/CVE-2026-27859
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