← Vulnerability Intelligence

CVE-2018-15133

High 8.1 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
Laravel Deserialization of Untrusted Data Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description

In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.

Metrics

CVSS 3.1
8.1 (HIGH) Score source: NVD CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
77% (percentile: 100) as of 1 November 2026
CWE
CWE-502

Affected products

laravel: laravel

References