GHSA-5vg9-5847-vvmq — laravel/framework
HIGHGHSA-5vg9-5847-vvmq is a high-severity (CVSS 8.9) CWE-93 vulnerability in laravel/framework. A fix is available for laravel/framework — see the affected versions and patch details below.
Laravel Framework: CRLF injection in default email rule
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-5vg9-5847-vvmq.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-5vg9-5847-vvmq plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 376,715 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
laravel/framework🐘laravel/frameworkReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | laravel/framework | ≥ 13.0.0&&< 13.10.0 | 13.10.0composer require laravel/framework:^13.10.0 |
| 🐘Packagist | laravel/framework | all versions | 12.60.0composer require laravel/framework:^12.60.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for laravel/framework, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update laravel/framework to 13.10.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5vg9-5847-vvmq is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-5vg9-5847-vvmq can be triaged on real exposure rather than presence alone.
Tailored to GHSA-5vg9-5847-vvmq. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-5vg9-5847-vvmq in your dependencies?
O3 Security finds GHSA-5vg9-5847-vvmq across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.