What it is
CVE-2018-15133 is an unauthenticated vulnerability affecting Laravel Laravel Framework. 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...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2018-15133
Laravel Framework Remote Code Execution
Laravel / Laravel Framework
- Severity
- CVSS 8.1 · High
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 76.8%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Laravel / Laravel Framework.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Laravel Framework Remote Code Execution
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.
- Published
- 09 Aug 2018
- Exploitation Reported
- 16 Jan 2024
- Attack vector
- Remote
- Complexity
- High
- Privileges
- None
- User interaction
- None
Tags
cisa
php
metasploit
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2018-15133
- laravel.com/docs/5.6/upgrade laravel.com · CVE Record https://laravel.com/docs/5.6/upgrade#upgrade-5.6.30
- packetstormsecurity.com/files/153641/PHP-Laravel-Framework-Token-Uns... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/153641/PHP-Laravel-Framework-Tok...
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
CISA
Independent exploitation attestation added to the KEV Intelligence record.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2024-01-16 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
Metasploit template detected 28 Apr 2025.
View Metasploit template (opens in new tab)Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →Scanner Artifacts
Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/http/laravel_token_unserialize_exec.rb | 28 Apr 2025 |
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
8.1
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
76.8%
Weaknesses
All CVSS Scores
CVSS v3.1
8.1
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
6.8
Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P
Timeline
From disclosure to observed exploitation
-
Metasploit module available
Exploit module available
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
CVE published
Vulnerability disclosed publicly
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2018-15133
Free JSON includes basic KEV fields{
"cve_id": "CVE-2018-15133",
"confidence": "Confirmed",
"cvss_score": 8.1,
"cvss_estimated": false,
"epss_score": 0.76814,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.