CVE-2026-27856

MediumCVSS 5.9/10Last modified Jul 15, 2026

Description

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-287 CWE-208

Affected software

No affected versions have been published.

Timeline

Published: Mar 27, 2026
Last modified: Jul 15, 2026
NVD status: Modified

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