Description

Fastjson before 1.2.48 mishandles autoType because, when an @type key is in a JSON document, and the value of that key is the name of a Java class, there may be calls to certain public methods of that class. Depending on the behavior of those methods, there may be JNDI injection with an attacker-supplied payload located elsewhere in that JSON document. This was exploited in the wild in 2023 through 2025. NOTE: this issue exists because of an incomplete fix for CVE-2017-18349. Also, a later bypass is covered by CVE-2022-25845.

INFO

Published Date :

2026-01-09T06:43:23.584Z

Last Modified :

2026-01-09T21:37:10.756Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2025-70974 vulnerability.

Vendors Products
Alibaba
  • Fastjson

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact