What’s Vulnerable › Vulnerabilities

CVE-2019-7662

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-02-09 · updated 2026-06-17
• Weakness: CWE-617

Description

An assertion failure was discovered in wasm::WasmBinaryBuilder::getType() in wasm-binary.cpp in Binaryen 1.38.22. This allows remote attackers to cause a denial of service (failed assertion and crash) via a crafted wasm file.

Affected products

• WebAssembly Binaryen: before 65 — fixed in 65

How to fix

Upgrade to a fixed version: WebAssembly Binaryen 65. Check the vendor advisory for mitigations.

References

• https://github.com/WebAssembly/binaryen/issues/1872
• https://github.com/WebAssembly/binaryen/issues/1872

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