Critical severity10.0OSV Advisory· Published Jan 9, 2026· Updated Apr 15, 2026
CVE-2025-70974
CVE-2025-70974
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
com.alibaba:fastjsonMaven | < 1.2.48 | 1.2.48 |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
10- github.com/advisories/GHSA-jm7w-5684-pvh8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-70974ghsaADVISORY
- github.com/alibaba/fastjson/compare/1.2.47...1.2.48nvdWEB
- github.com/vulhub/vulhub/tree/master/fastjson/1.2.47-rcenvdWEB
- web.archive.org/web/20220121055754/https://cert.360.cn/warning/detailghsaWEB
- www.cloudsek.com/blog/androxgh0st-continues-exploitation-operators-compromise-a-us-university-for-hosting-c2-loggernvdWEB
- www.cnvd.org.cn/flaw/show/CNVD-2019-22238nvdWEB
- www.freebuf.com/vuls/208339.htmlnvdWEB
- www.seebug.org/vuldb/ssvid-98020nvdWEB
- cert.360.cn/warning/detailnvd
News mentions
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