$ cve CVE-2018-15133 JSON

CVE-2018-15133 KEV EXPLOIT

8.1

HIGH · CVSS 3.1 · EPSS 76.8% (pctl 100)

Patch first

On CISA KEV — known exploited in the wild, due 2024-02-06.

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.

Scoring

CVSS	8.1 (HIGH, v3.1)
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	76.81% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-502
On CISA KEV	yes — remediate by 2024-02-06
Public exploit	yes
Published	2018-08-09
Last modified	2026-06-17

CISA KEV

Name	Laravel Deserialization of Untrusted Data Vulnerability
Added	2024-01-16
Due	2024-02-06
Vendor / product	Laravel / Laravel Framework
Ransomware use	none reported

Affected (1)

Vendor	Product
laravel	laravel

Public exploits

Source	Title	Date
exploit-db	PHP Laravel Framework 5.5.40 / 5.6.x < 5.6.30 - token Unserialize Remote Command Execution (Metasploit)	2019-07-16

References

→ the Explorer · watch your stack · NVD