GHSA-5vg9-5847-vvmq CVE-2026-48019
Laravel Framework: CRLF injection in default email rule
- Severity
- 8.9 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 0.51%
- Chance of exploitation in the next 30 days. Higher than 43.62% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
- Fix
13.10.0- Upgrade laravel/framework to this version or later
Description
Summary
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.
Description
Laravel applications that send email to addresses provided by users — for example during authentication flows or contact forms — may be vulnerable to manipulation of outbound mail content if the address is not adequately sanitized before it reaches the mail transport layer. An attacker who can supply an email address to such a flow may, under certain conditions, be able to influence the content of emails sent by the application, cause those emails to be delivered to unintended recipients, or cause the application's mail server to send unintended messages.
Impact
Affected applications may be exposed to unauthorized access and mail relay abuse. The severity depends on what the application sends by email and how its mail infrastructure is configured.
Remediation
Upgrade to version 12.60.0 or later, or 13.10.0 or later.
Affected versions
Packagist
| Package | Vulnerable | Fixed in |
|---|---|---|
| laravel/framework | >= 13.0.0, < 13.10.0 |
13.10.0 |
| laravel/framework | < 12.60.0 |
12.60.0 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
laravel/framework Packagist → 13.10.0
- composer
composer require laravel/framework:^13.10.0
Severity breakdown
CVSS 3.1 8.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Weakness
CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
How to prevent it
- Implementation: Avoid using CRLF as a special sequence.
- Implementation: Appropriately filter or quote CRLF sequences in user-controlled input.
References
Packages
Other links
- github.com/laravel/framework/security/advisories/GHSA-5vg9-5847-vvmq
- github.com/laravel/framework/commit/96e9a663db657cf37ef26cd794fda8ff60eaa451
- github.com/laravel/framework/commit/f336ba79e744257f84ebf0d096b0ebc62e8e1a4d
- github.com/laravel/framework/pull/60151
- github.com/laravel/framework/releases/tag/v12.60.0
- github.com/laravel/framework/releases/tag/v13.10.0
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| CVE-2018-15133 Laravel Framework RCE Vulnerability | High Known exploited | Also affects laravel/framework |
| GHSA-f9x3-7vq9-cph6 Laravel TokenGuard authentication bypass through non-string API credentials | Critical | Also affects laravel/framework |
| GHSA-5wcm-3v2w-8362 Laravel relationship inclusion can trigger unauthorized data destruction | Medium | Also affects laravel/framework |
| GHSA-jh5r-qr3c-85q8 Laravel: XSS in Debug Page Information | Low | Also affects laravel/framework |
| GHSA-crmm-hgp2-wgrp Laravel Framework: Temporary Signed URL Path Confusion | Medium | Also affects laravel/framework |
| GHSA-83wp-f5c3-hqqr Laravel framework susceptible to reflected cross-site scripting | Medium | Also affects laravel/framework |
| GHSA-546h-56qp-8jmw Laravel framework susceptible to reflected cross-site scripting | Medium | Also affects laravel/framework |
| GHSA-78fx-h6xr-vch4 Laravel has a File Validation Bypass | Critical | Also affects laravel/framework |
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