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Vulnerabilities

Vulnerability · CVE-2026-48019

CRLF injection in default email rule

Published Jun 1, 2026 · catalog updated Jun 1, 2026 · CRLF injection in default

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-48019. EPSS is 0.51%. Act only if a listed version of CRLF injection in default is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (CRLF injection in default).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.51%
Remediation
Version ranges on file
Affected products
composer laravel/framework

## 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • composer laravel/framework< 12.60.0
  • composer laravel/framework<= 13.9.0

How to fix CVE-2026-48019

  • Upgrade

    CVE-2026-48019 lists a fix boundary at 12.60.0. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 12.60.0

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-48019. EPSS is 0.51%. Act only if a listed version of CRLF injection in default is installed.

Which versions are affected?

Compare what you have installed with < 12.60.0, <= 13.9.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-93. EPSS 0.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Laravel security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 1, 2026 · Maintainer security tabs

    Detected

    ## 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 examp

Sources

  • CVE.orgVulnerability recordCVE-2026-48019

    Official CVE identifier

    cve.org
  • Maintainer security tabsVendor advisoryGHSA-5vg9-5847-vvmq

    ## 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 examp

    github.com

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Maintainer security tabsNov 2, 2026