CVE-2025-70974
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
CVSS
10.0
Critical
EPSS
0.7%
p49
KEV
—
Exploit Today
15
0-100
Published: Jan 9, 2026 · Last modified: Jul 15, 2026 · CWE-829
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.
- cert.360.cnhttps://cert.360.cn/warning/detail?id=7240aeab581c6dc2c9c5350756079955
- github.comhttps://github.com/alibaba/fastjson/compare/1.2.47...1.2.48
- github.comhttps://github.com/vulhub/vulhub/tree/master/fastjson/1.2.47-rce
- www.cloudsek.comhttps://www.cloudsek.com/blog/androxgh0st-continues-exploitation-operators-compromise-a-us-university-for-hosting-c2-logger
- www.cnvd.org.cnhttps://www.cnvd.org.cn/flaw/show/CNVD-2019-22238
- www.freebuf.comhttps://www.freebuf.com/vuls/208339.html
- www.seebug.orghttps://www.seebug.org/vuldb/ssvid-98020
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2025-70974
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2428203
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-70974.json