PT-2026-40030
CVE-2026-42006
·
Published
2026-05-12
·
Updated
2026-09-14
Description by
CVSS 2.0
7.8
HighMetricsAV:N/AC:L/Au:N/C:N/I:N/A:C
Name of the Vulnerable Software and Affected Versions
dovecot versions prior to 2.4.4-1.1
Description
An attacker can cause uncontrolled memory usage via excessive bracing over IMAP. A previous fix was incomplete as it only blocked closing braces, allowing the memory limit to be bypassed using open braces. This can lead to memory consumption reaching the configured limit.
Recommendations
Update to version 2.4.4-1.1.
Configure
vsz limit for the imap process to a low value.Exploitability
Exploit
Fix
Impacts
Vendors
Affected products
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