Report: CVE-2026-27856 - Dovecot Doveadm Timing Oracle Authentication Bypass

Report: CVE-2026-27856 - Dovecot Doveadm Timing Oracle Authentication Bypass

CVE ID :CVE-2026-27856 Published : March 27, 2026, 9:16 a.m. | 23 minutes ago 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. Severity: 7.4 | HIGH Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Severity
HIGH
Published
March 27, 2026
Affected Product: oracle attack