CVE-2026-23829

MEDIUM

5.3

Descripcion

Mailpit is an email testing tool and API for developers. Prior to version 1.28.3, Mailpit's SMTP server is vulnerable to Header Injection due to an insufficient Regular Expression used to validate `RCPT TO` and `MAIL FROM` addresses. An attacker can inject arbitrary SMTP headers (or corrupt existing ones) by including carriage return characters (`\r`) in the email address. This header injection occurs because the regex intended to filter control characters fails to exclude `\r` and `\n` when used inside a character class. Version 1.28.3 fixes this issue.

Detalles CVE

Puntuacion CVSS v3.15.3

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado1/19/2026

Ultima modificacion2/23/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

axllent:mailpit

Debilidades (CWE)

CWE-93CWE-150

Referencias

https://github.com/axllent/mailpit/commit/36cc06c125954dec6673219dafa084e13cc14534(security-advisories@github.com)

https://github.com/axllent/mailpit/releases/tag/v1.28.3(security-advisories@github.com)

https://github.com/axllent/mailpit/security/advisories/GHSA-54wq-72mp-cq7c(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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