# CVE-2018-15133: Laravel Framework RCE Vulnerability

Source: https://junglewise.ai/threats/cve-2018-15133-laravel-deserialization-of-untrusted-data-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-14. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2018-15133 · Severity: critical · CVSS 3.1 · Exploited in the wild · Published 2022-05-14

Laravel Framework contains a deserialization of untrusted data vulnerability in the decrypt method of the Encrypter component. An attacker can achieve remote code execution by sending a specially crafted X-XSRF-TOKEN value, provided they have knowledge of the application's encryption key (APP_KEY).

Technologies: [laravel/framework (Packagist)](https://junglewise.ai/threats/technologies/packagist-laravel-framework). Vendors: [Laravel](https://junglewise.ai/threats/vendors/laravel), [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2018-15133 exploited in the wild?** Yes. CVE-2018-15133 is known to be exploited in the wild, first recorded on 16 January 2024. Treat it as urgent.

**How severe is CVE-2018-15133?** Critical severity, with a CVSS score of 3.1, published 14 May 2022.

**Which products and versions are affected?** laravel/framework (Packagist) ECOSYSTEM:introduced=0,last_affected=5.5.40.

**Is there a fix for CVE-2018-15133?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2018-15133 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2018-15133?** Check whether you run Laravel Framework or laravel/framework (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Laravel Laravel Framework through 5.5.40, 5.6.x through 5.6.29

## Identifiers

- CVE-2018-15133
- GHSA-qvqm-h22r-4cp9

## Timeline

- 2018-08-09: disclosed: NVD Published Date
- 2024-01-16: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2024-01-16: exploited: Reported as exploited in the wild in CISA KEV update

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