CVE-2018-15133
Laravel Deserialization of Untrusted Data Vulnerability
- Published
- Aug 9, 2018
- Updated
- Oct 21, 2025
- Assigning CNA
- mitre
- Evidence observed
- Jul 16, 2019
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.5%
- Model date
- Oct 15, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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.
Sources
modules/exploits/unix/http/laravel_token_unserialize_exec.rb
Metasploit Framework modulesDeclared conditions
- platform: Unix($.exploit_unix/http/laravel_token_unserialize_exec.platform)
- verification: check_declared($.exploit_unix/http/laravel_token_unserialize_exec.check)
- cve-2018-15133Exploit
Proof-of-concept exploit for CVE-2018-15133 that achieves remote command execution on Laravel applications by abusing insecure deserialization with forged API keys.
Responsible use
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