CVE-2019-7704

MEDIUM

wasm::WasmBinaryBuilder::readUserSection in wasm-binary.cpp in Binaryen 1.38.22 triggers an attempt at excessive memory allocation, as demonstrated by wasm-merge and wasm-opt.

Affects 1 product across 1 vendor.

CVSS 3.16.5
EPSS1.2%
Percentile67th
PatchPatched
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, requires user interaction, impact contained to the vulnerable component, no confidentiality impact, no integrity impact, full availability impact.
CWE Weakness Definitions
CWE-770: Allocation of Resources Without Limits or Throttling

Software allocates resources without imposing limits, allowing attackers to exhaust system capacity.

Related Attack Patterns (CAPEC)
CAPEC-147 XML Ping of the Death
via CWE-770
CAPEC-197 Exponential Data Expansion
via CWE-770
CAPEC-229 Serialized Data Parameter Blowup
via CWE-770
CAPEC-491 Quadratic Data Expansion
via CWE-770
CAPEC-230 Serialized Data with Nested Payloads
via CWE-770
Show all 20

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2019. A medium severity vulnerability affects Webassembly systems (CVE-2019-7704). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2019-GLOBAL-141253-M • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2019-7704?
This vulnerability was disclosed in 2019. A medium severity vulnerability affects Webassembly systems (CVE-2019-7704). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2019-7704?
CVE-2019-7704 has CVSS 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS: 1.2%.
Is CVE-2019-7704 actively exploited?
No confirmed active exploitation of CVE-2019-7704 as of 2026-05-30.
How do I remediate CVE-2019-7704?
Priority: MONITOR.
What systems are affected by CVE-2019-7704?
CVE-2019-7704 affects Webassembly Binaryen.
Vulnerability Details
CVE IDCVE-2019-7704
BSIDBS-2019-GLOBAL-141253-M BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published2019-02-10
Last Modified2024-11-21
ICS Relevance15%
Weakness (CWE)
Allocation of Resources Without Limits or Throttling
SourceNVD
Official Description

wasm::WasmBinaryBuilder::readUserSection in wasm-binary.cpp in Binaryen 1.38.22 triggers an attempt at excessive memory allocation, as demonstrated by wasm-merge and wasm-opt.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: wasm::WasmBinaryBuilder::readUserSection in wasm-binary.cpp in Binaryen 1.38.22 triggers an attempt at excessive memory allocation, as demonstrated by wasm-merge and wasm-opt. CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Exploitation Likelihood: MINIMAL

Affected Products
VendorProductAffected Versions
Webassembly Binaryen < 64
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 2804 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hashaa5e33898c28e43d8c7ed19f23515d12716acb7353f496c9c7d9e5cbec1d0d63d54ce1739b6e5cd2143e6578b0ea84e7fde555f606efe66fb4a5072ca87c5bbe
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