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CVE-2025-70974
Good to know:
Date: January 9, 2026
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.
Severity Score
Related Resources (11)
Severity Score
Weakness Type (CWE)
Inclusion of Functionality from Untrusted Control Sphere
CWE-829Top Fix
Upgrade Version
Upgrade to version com.alibaba:fastjson:1.2.48;https://github.com/alibaba/fastjson.git - 1.2.48
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | CHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | HIGH |
| Availability (A): | HIGH |