Acceptance of Extraneous Untrusted Data With Trusted Data Affecting dovecot-mysql package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.26% (17th percentile)

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  • Snyk IDSNYK-RHEL8-DOVECOTMYSQL-19734576
  • published13 Sept 2026
  • disclosed28 Aug 2026

Introduced: 28 Aug 2026

NewCVE-2026-42008  (opens in a new tab)
CWE-349  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 dovecot-mysql.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dovecot-mysql package and not the dovecot-mysql package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Forwarding information received from a host listed as a trusted proxy is not kept separate from Dovecot's own authentication fields, so a value sent by that host can be injected as an internal authentication field. Any host permitted to act as a trusted proxy can authenticate as any user without knowing that user's password. This affects deployments whose password database honours a field that permits authentication without a password. 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 Base Scores

version 3.1