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Vulnerabilities

WebAssembly Binaryen

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

25CVEs
CVE-2021-45290
A Denial of Service vulnerability exits in Binaryen 103 due to an assertion abort in wasm::handle_unreachable.
Published 2021-12-21 · Modified
7.5EPSS 0.015
CVE-2019-7662
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.
Published 2019-02-09 · Modified
7.1EPSS 0.016
CVE-2025-14956
WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow
Published 2025-12-19 · Modified
7.1EPSS 0.002
CVE-2019-7703
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 denial-of-service via a wasm file, as demonstrated by wasm-merge.
Published 2019-02-10 · Modified
6.5EPSS 0.015
CVE-2019-15759
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 crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by wasm2js.
Published 2019-08-29 · Modified
6.5EPSS 0.013
CVE-2019-15758
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 can cause denial-of-service, as demonstrated by wasm2js.
Published 2019-08-29 · Modified
6.5EPSS 0.012
CVE-2019-7153
A NULL pointer dereference was discovered in wasm::WasmBinaryBuilder::processFunctions() in wasm/wasm-binary.cpp (when calling wasm::WasmBinaryBuilder::getFunctionIndexName) in Binaryen 1.38.22. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by wasm-opt.
Published 2019-01-29 · Modified
6.5EPSS 0.012
CVE-2019-7704
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.
Published 2019-02-10 · Modified
6.5EPSS 0.012
CVE-2019-7151
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-of-service, as demonstrated by wasm-opt.
Published 2019-01-29 · Modified
6.5EPSS 0.012
CVE-2019-7700
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, leading to denial-of-service, as demonstrated by wasm-merge.
Published 2019-02-10 · Modified
6.5EPSS 0.012
CVE-2019-7701
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 fault, leading to denial-of-service, as demonstrated by wasm2js.
Published 2019-02-10 · Modified
6.5EPSS 0.012
CVE-2019-7152
A heap-based buffer over-read was discovered in wasm::WasmBinaryBuilder::processFunctions() in wasm/wasm-binary.cpp (when calling wasm::WasmBinaryBuilder::getFunctionIndexName) in Binaryen 1.38.22. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by wasm-opt.
Published 2019-01-29 · Modified
6.5EPSS 0.012
CVE-2019-7702
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 fault, leading to denial-of-service, as demonstrated by wasm-as.
Published 2019-02-10 · Modified
6.5EPSS 0.012
CVE-2019-7154
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 emscripten-optimizer/simple_ast.h. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by wasm2js.
Published 2019-01-29 · Modified
6.5EPSS 0.011
CVE-2020-18382
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, leading to denial-of-service, as demonstrated by wasm-opt.
Published 2023-08-22 · Modified
6.5EPSS 0.006
CVE-2020-18378
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, leading to denial-of-service, as demonstrated by wasm-as.
Published 2023-08-22 · Modified
6.5EPSS 0.006
CVE-2021-45293
A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in wasm::WasmBinaryBuilder::visitLet.
Published 2021-12-21 · Modified
5.5EPSS 0.008
CVE-2021-46053
A Denial of Service vulnerability exists in Binaryen 103. The program terminates with signal SIGKILL.
Published 2022-01-07 · Modified
5.5EPSS 0.007
CVE-2021-46052
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::Tuple::validate.
Published 2022-01-07 · Modified
5.5EPSS 0.007
CVE-2021-46054
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).
Published 2022-01-07 · Modified
5.5EPSS 0.007
CVE-2021-46048
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::readFunctions.
Published 2022-01-07 · Modified
5.5EPSS 0.007
CVE-2021-46055
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).
Published 2022-01-07 · Modified
5.5EPSS 0.007
CVE-2021-46050
A Stack Overflow vulnerability exists in Binaryen 103 via the printf_common function.
Published 2022-01-07 · Modified
5.5EPSS 0.007
CVE-2025-14957
WebAssembly Binaryen IRBuilder wasm-ir-builder.cpp makeLocalTee null pointer dereference
Published 2025-12-19 · Modified
5.5EPSS 0.002
CVE-2026-8257
WebAssembly Binaryen BrOn wasm-ir-builder.cpp makeBrOn assertion
Published 2026-05-11 · Analyzed
5.5EPSS 0.002