EUVD-2026-29470
GHSA-m97m-74mq-mqc6
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionNVD
Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU time limits for Sieve up to 130 times of the configured limit. Attacker can use this to degrade server performance and bypass configured CPU time limits for Sieve scripts. Install fixed version, or alternatively prevent direct access to Sieve scripts via ManageSieve or local access. No publicly available exploits are known.
AnalysisAI
OX Dovecot Pro allows authenticated users to upload malicious Sieve scripts via ManageSieve protocol or local access that bypass configured CPU time limits by up to 130 times, enabling denial of service through server performance degradation. The vulnerability requires low-privilege authenticated access and medium attack complexity, affecting availability without compromising confidentiality or integrity. …
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