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CVE-2018-15133

Published: Aug 9, 2018Updated: Nov 7, 2025 Sources: CVE List NVD GHSACWE-502
NVD MITRE
8.1CVSSHIGH
EPSS Score
76.8%
Top 0.5%
CISA KEV
Active Exploitation
Since Jan 16, 2024
Exploits
2 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502

Affected Products

n/an/a
laravel/frameworkPackagistOSS Libraries
laravellaravel
On-prem
OSS Libraries / web-framework
packagistpackage-ecosystemOSS Libraries
laraveloss-projectUSOSS Librariesaka laravel framework, livewire

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Jan 16, 2024
Remediation due:Feb 6, 2024

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://laravel.com/docs/5.6/upgrade#upgrade-5.6.30
laravel.com
http://packetstormsecurity.com/files/153641/PHP-Laravel-Framework-Token-Unserialize-Remote-Command-Execution.html
packetstormsecurity.com
https://nvd.nist.gov/vuln/detail/CVE-2018-15133
nvd.nist.gov
and 4 more references View all →

Timeline

Published
Aug 9, 2018
Added to CISA KEV
Jan 16, 2024
Last Updated
Nov 7, 2025

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