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CVE-2026-42395

Dovecot

Description

A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies are not affected. Restrict the list of trusted proxy networks to hosts that are fully under your control. Update to non-vulnerable version. No publicly available exploits are known.

CVSS 4.3EPSS 0%Risk 0.43
View source
Published
2026-08-28 12:16:29
Affected versions
unknown
Type
Other
Last modified
2026-08-28 12:16:29
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L