CVE-2018-15133
Confirmed PUBLISHEDIn 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...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Aug 09, 2018
- Exploitation Reported
- Jan 16, 2024
- CVSS
- 8.1 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
n/a
|
n/a |
Affected |
CVE References
- 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...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2024-01-16 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit 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 | Apr 28, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2024-01-16 00:00:00 UTC · CISA
Proof of concept available
Recorded 2018-08-14 18:51:50 UTC · GitHub
Weaknesses (CWE)
-
Deserialization of Untrusted Data
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/http/laravel_token_unserialize_exec.rb | Apr 28, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2025-04-27 09:32:50 UTC · 0 stars
github · Created 2021-12-28 02:33:13 UTC · 0 stars
"Lavel Exploit CVE-2018-15133 is a powerful exploit that allows attackers to gain unauthorized access to vulnerable systems. This exploit was originally developed as part of a Capture The Flag (CTF) challenge and has since been used by security researchers and ethical hackers to identify and address vulnerabilities in web applications.
github · Created 2021-01-03 08:06:46 UTC · 3 stars
github · Created 2020-11-09 08:44:27 UTC · 0 stars
An automated PoC for CVE 2018-15133
github · Created 2020-02-25 18:36:13 UTC · 0 stars
Cette exploit en python va vous permettre de créer des listes de sites et les exploiter rapidement.
github · Created 2018-08-14 18:51:50 UTC · 251 stars
PoC for CVE-2018-15133 (Laravel unserialize vulnerability)
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
15:02 UTC about 1 year ago15:02 UTC · about 1 year ago
Metasploit module available
Exploit module available
-
00:00 UTC over 2 years ago00:00 UTC · over 2 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
18:51 UTC almost 8 years ago18:51 UTC · almost 8 years ago
Public PoC available
Public proof-of-concept code published
-
19:00 UTC almost 8 years ago19:00 UTC · almost 8 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC almost 8 years ago00:00 UTC · almost 8 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2018-15133
{
"cve_id": "CVE-2018-15133",
"title": "In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code exe...",
"affected_vendor": "Laravel",
"affected_product": "Laravel Framework",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 8.1,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}