Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Amber
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Amber
Lifecycle Timeline
4DescriptionCVE.org
Deserialization of Untrusted Data vulnerability in DTStack chunjun (chunjun-core/src/main/java/com/dtstack/chunjun/util modules). This vulnerability is associated with program files GsonUtil.Java.
This issue affects chunjun: before 1.16.1.
AnalysisAI
A deserialization of untrusted data vulnerability exists in DTStack chunjun versions prior to 1.16.1, specifically in the GsonUtil.java module within chunjun-core. An attacker can exploit this CWE-502 flaw to execute arbitrary code by crafting malicious serialized objects that are processed during deserialization. The vulnerability is reportedly patched as of version 1.16.1, with a patch available from the vendor via GitHub pull request #1939.
Technical ContextAI
The vulnerability resides in the Gson deserialization utility (GsonUtil.java) used by DTStack chunjun, a data integration framework written in Java. CWE-502 (Deserialization of Untrusted Data) represents a fundamental weakness where untrusted input is deserialized without proper validation, allowing attackers to instantiate arbitrary Java objects or invoke gadget chains. The affected product is identified via CPE cpe:2.3:a:dtstack:chunjun:*:*:*:*:*:*:*:*, indicating all versions of chunjun prior to 1.16.1 are in scope. Gson is a widely-used JSON serialization library, and improper use without type validation during deserialization creates a direct path to remote code execution in Java applications.
RemediationAI
Immediately upgrade DTStack chunjun to version 1.16.1 or later to obtain the vendor patch. Review and apply the changes documented in GitHub pull request #1939 (https://github.com/DTStack/chunjun/pull/1939) to understand the specific fixes applied to GsonUtil.java. Until patching is completed, restrict network access to chunjun instances to trusted sources only, disable or isolate chunjun components that process untrusted JSON input, and monitor deserialization operations for unusual object instantiation patterns. Implement input validation and consider using alternative serialization libraries with stricter type control if feasible.
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-14708
GHSA-q9jc-xq58-m52x