wid-sec-w-2026-0891
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Published 2026-03-26
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View on BSI CERT-Bund ↗
Dovecot: Multiple Vulnerabilities
CVSS 7.7
HIGH
Risk Summary
Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.
Affected Vendors
Debian
Open Source
SUSE
Ubuntu
Affected Products (4)
Open Source
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Dovecot
<2.4.0
Open Source
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Dovecot
2.4.0
Open Source
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Dovecot
<2.4.3
Open Source
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Dovecot
2.4.3
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