WonderTrader Internal Limit Order Book Cache MatchEngine.cpp update_lob behavioral workflow
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A weakness has been identified in WonderTrader up to 0.9.9. This vulnerability affects the function MatchEngine::update_lob of the file src/WtBtCore/MatchEngine.cpp of the component Internal Limit Order Book Cache Handler. This manipulation causes enforcement of behavioral workflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | 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 | — | No fix listed | CNA |
- WonderTrader Vendor— Affected 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 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wondertrader:wondertrader:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:wondertrader:wondertrader:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-19037
- 2026-10-03 Alias added: GHSA-394j-mpf4-9p7j
References
Sources
- CVE-2026-19037 · CVE Program
- CVE-2026-19037 · NVD
- FIRST EPSS
- GHSA-394j-mpf4-9p7j · GitHub Advisory Database · CC BY 4.0
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