EUVD-2026-54497
GHSA-q68v-x5p2-qf6h
Severity by source
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/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:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable endpoint with no authentication required, but high complexity limits opportunism; only low integrity impact applies with no confidentiality or availability effects.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
4DescriptionCVE.org
A vulnerability was detected in WonderTrader up to 0.9.9. Impacted is the function TraderDD::queryTrades of the file src/TraderDD/TraderDD.cpp. The manipulation of the argument FID_JYLB results in enforcement of behavioral workflow. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is considered difficult. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
Improper behavioral workflow enforcement in WonderTrader up to version 0.9.9 allows remote attackers to manipulate the FID_JYLB argument in the TraderDD::queryTrades function, causing the application to execute trading query operations in an unintended sequence. Per the CVSS 4.0 vector (AV:N/AC:H/PR:N/UI:N), exploitation is network-reachable without authentication but requires high attack complexity, limiting opportunistic abuse. A proof-of-concept exploit is publicly available (E:P), and the vendor did not respond to responsible disclosure, leaving no patch available at time of analysis.
Technical ContextAI
WonderTrader is an open-source quantitative trading framework primarily used in Chinese financial markets, providing broker integration modules. The affected component is the TraderDD module (src/TraderDD/TraderDD.cpp), which handles trade queries through the queryTrades function. FID_JYLB is a field identifier likely representing trade type or category (交易类别) in Chinese brokerage protocol payloads. CWE-841 (Improper Enforcement of Behavioral Workflow) describes a root cause where the application fails to enforce that operations occur in the required sequence or state - in this case, allowing a manipulated FID_JYLB argument to trigger query logic that should only be reachable under specific workflow preconditions. The CPE string cpe:2.3:a:n/a:wondertrader:*:*:*:*:*:*:*:* reflects that NVD has not assigned a formal vendor identifier, suggesting limited mainstream tracking of this product.
RemediationAI
No vendor-released patch has been identified at time of analysis - the vendor did not respond to responsible disclosure, and no fixed version is confirmed. As an immediate compensating control, administrators should restrict network access to WonderTrader's TraderDD service using host-based or perimeter firewall rules, limiting reachability to explicitly trusted IP ranges only; this directly addresses the AV:N attack vector at the cost of reduced remote accessibility. If the TraderDD module is not operationally required, disabling or removing it eliminates the attack surface entirely with no functional trade-off for unaffected workflows. Implementing input validation or allowlisting on FID_JYLB values at a proxy or API gateway layer may reduce exploitability, though effectiveness depends on protocol visibility. Administrators should monitor https://vuldb.com/vuln/386953 and the WonderTrader project repository for any future patch releases. Upgrading beyond version 0.9.9 cannot be recommended at this time as no patched release version has been confirmed.
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