CVE-2026-48019

CRLF injection in Laravel's default email rule enables SMTP smuggling and spoofed-mail relay

Published Sep 4, 2026 CVSS 3.1 · 8.9 High EPSS < 1% KEV · Not listed
Description
Laravel is a web application framework. Prior to versions 12.60.0 and 13.10.0, a CRLF injection vulnerability in Laravel's email validation, in combination with how Symfony Mailer and Symfony Mime handle certain character sequences, may allow an unauthenticated attacker to interfere with outbound email processing in applications that send mail to user-supplied addresses. This issue has been patched in versions 12.60.0 and 13.10.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Laravel
Laravel framework
Vendors & Products Laravel
Laravel framework
Type Values Removed Values Added
Description Laravel is a web application framework. Prior to versions 12.60.0 and 13.10.0, a CRLF injection vulnerability in Laravel's email validation, in combination with how Symfony Mailer and Symfony Mime handle certain character sequences, may allow an unauthenticated attacker to interfere with outbound email processing in applications that send mail to user-supplied addresses. This issue has been patched in versions 12.60.0 and 13.10.0.
Title CRLF injection in Laravel's default email rule enables SMTP smuggling and spoofed-mail relay
Weaknesses CWE-93
References
Metrics cvssV3_1

{'score': 8.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 8, 2026, 1:01 PM
Reserved
May 20, 2026, 5:44 PM
Status
Awaiting Analysis
Published
Sep 4, 2026, 11:17 PM
Modified
Sep 10, 2026, 8:41 PM