GHSA-5VG9-5847-VVMQ

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.

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.

GHSA-5VG9-5847-VVMQ has a CVSS score of 8.9 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (13.10.0, 12.60.0); upgrading removes the vulnerable code path.

Kodem intelligence

Upgrade to version 12.60.0 or later, or 13.10.0 or later.

1. What is GHSA-5VG9-5847-VVMQ? GHSA-5VG9-5847-VVMQ is a high-severity security vulnerability in laravel/framework (composer), affecting versions >= 13.0.0, <= 13.9.0. It is fixed in 13.10.0, 12.60.0.
2. How severe is GHSA-5VG9-5847-VVMQ? GHSA-5VG9-5847-VVMQ has a CVSS score of 8.9 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of laravel/framework are affected by GHSA-5VG9-5847-VVMQ? laravel/framework (composer) versions >= 13.0.0, <= 13.9.0 is affected.
4. Is there a fix for GHSA-5VG9-5847-VVMQ? Yes. GHSA-5VG9-5847-VVMQ is fixed in 13.10.0, 12.60.0. Upgrade to this version or later.
5. Is GHSA-5VG9-5847-VVMQ exploitable, and should I be worried? Whether GHSA-5VG9-5847-VVMQ is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether GHSA-5VG9-5847-VVMQ is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix GHSA-5VG9-5847-VVMQ?
   • Upgrade laravel/framework to 13.10.0 or later
   • Upgrade laravel/framework to 12.60.0 or later