What’s Vulnerable › Vulnerabilities

CVE-2026-19037: WonderTrader Internal Limit Order Book Cache MatchEngine.cpp update_lob behavioral workflow

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-08-12
• Weakness: CWE-840

Description

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.

Affected products

• WonderTrader: 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.9.4, 0.9.5 (+4)

References

• https://my.feishu.cn/wiki/BXljwvHSLiiqiSkI7jScIqkSn4c
• https://vuldb.com/cve/CVE-2026-19037
• https://vuldb.com/submit/863755
• https://vuldb.com/vuln/386456
• https://vuldb.com/vuln/386456/cti

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