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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-48019
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-04 23:17:09 UTC
Updated2026-09-04 23:17:09 UTC
DescriptionLaravel 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.

Risk And Classification

Primary CVSS: v3.1 8.9 HIGH from [email protected]

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

Problem Types: CWE-93 | CWE-93 CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.9HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
3.1CNADECLARED8.9HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Laravel Framework affected >= 13.0.0, < 13.10.0 Not specified
CNA Laravel Framework affected < 12.60.0 Not specified

References

ReferenceSourceLinkTags
github.com/laravel/framework/releases/tag/v13.10.0 [email protected] github.com
github.com/laravel/framework/security/advisories/GHSA-5vg9-5847-vvmq [email protected] github.com
github.com/laravel/framework/releases/tag/v12.60.0 [email protected] github.com
github.com/laravel/framework/commit/96e9a663db657cf37ef26cd794fda8ff60ea... [email protected] github.com
github.com/laravel/framework/pull/60151 [email protected] github.com
github.com/laravel/framework/commit/f336ba79e744257f84ebf0d096b0ebc62e8e... [email protected] github.com
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