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webassembly / binaryen CVEs

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25 CVEs tagged to webassembly / binaryen0 Critical, 1 High, 21 Medium, 3 Low, 0 Unrated.

CVE-2026-8257

Published May 11, 2026

A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn…

CVSS 1.9 · Low
evidence mentions
8
Buzz score
37.5
Public PoC observed
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CVE-2025-14957

Published Dec 19, 2025

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src…

CVSS 1.9 · Low
evidence mentions
9
Buzz score
34.0
Public PoC observed
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CVE-2025-14956

Published Dec 19, 2025

A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This ma…

CVSS 1.9 · Low
evidence mentions
8
Buzz score
33.0
Public PoC observed
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CVE-2020-18382

Published Aug 22, 2023

Heap-buffer-overflow in /src/wasm/wasm-binary.cpp in wasm::WasmBinaryBuilder::visitBlock(wasm::Block*) in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, le…

CVSS 6.5 · Medium
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CVE-2020-18378

Published Aug 22, 2023

A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, le…

CVSS 6.5 · Medium
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CVE-2021-46055

Published Jan 10, 2022

A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).

CVSS 5.5 · Medium
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CVE-2021-46054

Published Jan 10, 2022

A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).

CVSS 5.5 · Medium
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CVE-2021-46053

Published Jan 10, 2022

A Denial of Service vulnerability exists in Binaryen 103. The program terminates with signal SIGKILL.

CVSS 5.5 · Medium
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CVE-2021-46052

Published Jan 10, 2022

A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::Tuple::validate.

CVSS 5.5 · Medium
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CVE-2021-46048

Published Jan 10, 2022

A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::readFunctions.

CVSS 5.5 · Medium
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CVE-2019-15759

Published Aug 29, 2019

An issue was discovered in Binaryen 1.38.32. Two visitors in ir/ExpressionManipulator.cpp can lead to a NULL pointer dereference in wasm::LocalSet::finalize in wasm/wasm.cpp. A cr…

CVSS 6.5 · Medium
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CVE-2019-15758

Published Aug 29, 2019

An issue was discovered in Binaryen 1.38.32. Missing validation rules in asmjs/asmangle.cpp can lead to an Assertion Failure at wasm/wasm.cpp in wasm::asmangle. A crafted input ca…

CVSS 6.5 · Medium
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CVE-2019-7704

Published Feb 10, 2019

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 6.5 · Medium
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CVE-2019-7703

Published Feb 10, 2019

In Binaryen 1.38.22, there is a use-after-free problem in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp. Remote attackers could leverage this vulnerability to cause a deni…

CVSS 6.5 · Medium
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CVE-2019-7702

Published Feb 10, 2019

A NULL pointer dereference was discovered in wasm::SExpressionWasmBuilder::parseExpression in wasm-s-parser.cpp in Binaryen 1.38.22. A crafted wasm input can cause a segmentation…

CVSS 6.5 · Medium
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CVE-2019-7701

Published Feb 10, 2019

A heap-based buffer over-read was discovered in wasm::SExpressionParser::skipWhitespace() in wasm-s-parser.cpp in Binaryen 1.38.22. A crafted wasm input can cause a segmentation f…

CVSS 6.5 · Medium
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CVE-2019-7700

Published Feb 10, 2019

A heap-based buffer over-read was discovered in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp in Binaryen 1.38.22. A crafted wasm input can cause a segmentation fault, lea…

CVSS 6.5 · Medium
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CVE-2019-7662

Published Feb 9, 2019

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…

CVSS 6.5 · Medium
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CVE-2019-7154

Published Jan 29, 2019

The main function in tools/wasm2js.cpp in Binaryen 1.38.22 has a heap-based buffer overflow because Emscripten is misused, triggering an error in cashew::JSPrinter::printAst() in…

CVSS 6.5 · Medium
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CVE-2019-7153

Published Jan 29, 2019

A NULL pointer dereference was discovered in wasm::WasmBinaryBuilder::processFunctions() in wasm/wasm-binary.cpp (when calling wasm::WasmBinaryBuilder::getFunctionIndexName) in Bi…

CVSS 6.5 · Medium
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CVE-2019-7152

Published Jan 29, 2019

A heap-based buffer over-read was discovered in wasm::WasmBinaryBuilder::processFunctions() in wasm/wasm-binary.cpp (when calling wasm::WasmBinaryBuilder::getFunctionIndexName) in…

CVSS 6.5 · Medium
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CVE-2019-7151

Published Jan 29, 2019

A NULL pointer dereference was discovered in wasm::Module::getFunctionOrNull in wasm/wasm.cpp in Binaryen 1.38.22. A crafted input can cause segmentation faults, leading to denial…

CVSS 6.5 · Medium
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