CVE-2026-23829

MEDIUM

5.3

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung5.3

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht1/19/2026

Zuletzt geandert2/23/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

axllent:mailpit

Schwachen (CWE)

CWE-93CWE-150

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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