CVE Vulnerabilities

CVE-2021-28254

Deserialization of Untrusted Data

Published: Apr 19, 2023 | Modified: Mar 05, 2025
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

A deserialization vulnerability in the destruct() function of Laravel v8.5.9 allows attackers to execute arbitrary commands.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Name Vendor Start Version End Version
Laravel Laravel 8.5.9 (including) 8.5.9 (including)

Potential Mitigations

  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

References