CVE-2018-15133
Published: January 16, 2024
Official Description
Laravel Framework contains a deserialization of untrusted data vulnerability, allowing for remote command execution. This vulnerability may only be exploited if a malicious user has accessed the application encryption key (APP_KEY environment variable).
CISA KEV Advisory
Laravel Deserialization of Untrusted Data Vulnerability
Laravel Framework contains a deserialization of untrusted data vulnerability, allowing for remote command execution. This vulnerability may only be exploited if a malicious user has accessed the application encryption key (APP_KEY environment variable).
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Risk Analysis
The Laravel Framework contains a deserialization vulnerability that can lead to remote command execution if an attacker has access to the application encryption key. The high EPSS score of 0.86029 indicates a very high likelihood of exploitation, making this a serious concern.
This vulnerability is actively exploited in the wild and is part of CISA's KEV catalog, confirming its use by attackers.
Ensure your Laravel application encryption key (APP_KEY) is securely stored and not publicly accessible. Update Laravel Framework to a patched version.
Technical Analysis
CVE-2018-15133 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2018-15133 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-15133 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1