CRLF Injection Affecting exim4 package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-EXIM4-19964575
  • published20 Sept 2026
  • disclosed19 Sept 2026

Introduced: 19 Sep 2026

NewCVE-2026-94057  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable exim4.

NVD Description

Note: Versions mentioned in the description apply only to the upstream exim4 package and not the exim4 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.