Webassembly - vulnerabilities (CVEs)

46 CVEs in 5 products, 0 in the last 30 days, newest from 2026-09-12.

Products

• Binaryen - 25 CVEs
• Wabt - 12 CVEs
• Webassembly Binary Toolkit - 5 CVEs
• Webassembly - 3 CVEs
• Wasm - 1 CVEs

Newest CVEs of Webassembly

• CVE-2026-90648 - CVSS 7.1 (high), 2026-09-12: wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does…
• CVE-2026-8257 - CVSS 5.5 (medium), 2026-05-11: 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…
• CVE-2025-15412 - CVSS 7.8 (high), 2026-01-01: A security vulnerability has been detected in WebAssembly wabt up to 1.0.39. This issue affects the function wabt::Decompiler::VarName of the file…
• CVE-2025-15411 - CVSS 7.8 (high), 2026-01-01: A weakness has been identified in WebAssembly wabt up to 1.0.39. This vulnerability affects the function wabt::AST::InsertNode of the file…
• CVE-2025-14957 - CVSS 5.5 (medium), 2025-12-19: A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function…
• CVE-2025-14956 - CVSS 7.1 (high), 2025-12-19: A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file…
• CVE-2025-6275 - CVSS 4.8 (medium), 2025-06-19: A vulnerability was found in WebAssembly wabt up to 1.0.37. It has been declared as problematic. Affected by this vulnerability is the function GetFuncOffset…
• CVE-2025-6274 - CVSS 4.8 (medium), 2025-06-19: A vulnerability was found in WebAssembly wabt up to 1.0.37. It has been classified as problematic. Affected is the function OnDataCount of the file…
• CVE-2025-6273 - CVSS 4.8 (medium), 2025-06-19: A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file…
• CVE-2025-3122 - CVSS 5.3 (medium), 2025-04-02: A vulnerability classified as problematic was found in WebAssembly wabt 1.0.36. Affected by this vulnerability is the function…
• CVE-2025-2584 - CVSS 6.8 (medium), 2025-03-21: A vulnerability was found in WebAssembly wabt 1.0.36. It has been declared as critical. This vulnerability affects the function…
• CVE-2025-2368 - CVSS 8.8 (high), 2025-03-17: A vulnerability was found in WebAssembly wabt 1.0.36 and classified as critical. This issue affects the function wabt::interp::(anonymous…
• CVE-2023-46331 - CVSS 5.5 (medium), 2023-10-23: WebAssembly wabt 1.0.33 has an Out-of-Bound Memory Read in in DataSegment::IsValidRange(), which lead to segmentation fault.
• CVE-2023-46332 - CVSS 5.5 (medium), 2023-10-23: WebAssembly wabt 1.0.33 contains an Out-of-Bound Memory Write in DataSegment::Drop(), which lead to segmentation fault.
• CVE-2020-18382 - CVSS 6.5 (medium), 2023-08-22: 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…
• CVE-2020-18378 - CVSS 6.5 (medium), 2023-08-22: 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…
• CVE-2023-31669 - CVSS 5.5 (medium), 2023-05-23: WebAssembly wat2wasm v1.0.32 allows attackers to cause a libc++abi.dylib crash by putting '@' before a quote (").
• CVE-2023-31670 - CVSS 7.5 (high), 2023-05-23: An issue in wasm2c 1.0.32, wasm2wat 1.0.32, wasm-decompile 1.0.32, and wasm-validate 1.0.32 allows attackers to cause a Denial of Service (DoS) via running a…
• CVE-2023-27119 - CVSS 5.5 (medium), 2023-03-10: WebAssembly v1.0.29 was discovered to contain a segmentation fault via the component wabt::Decompiler::WrapChild.
• CVE-2023-27116 - CVSS 5.5 (medium), 2023-03-10: WebAssembly v1.0.29 discovered to contain an abort in CWriter::MangleType.
• CVE-2023-27115 - CVSS 5.5 (medium), 2023-03-10: WebAssembly v1.0.29 was discovered to contain a segmentation fault via the component wabt::cat_compute_size.
• CVE-2023-27117 - CVSS 7.8 (high), 2023-03-10: WebAssembly v1.0.29 was discovered to contain a heap overflow via the component component wabt::Node::operator.
• CVE-2022-43283 - CVSS 5.5 (medium), 2022-10-28: wasm2c v1.0.29 was discovered to contain an abort in CWriter::Write.
• CVE-2022-43282 - CVSS 7.1 (high), 2022-10-28: wasm-interp v1.0.29 was discovered to contain an out-of-bounds read via the component OnReturnCallIndirectExpr->GetReturnCallDropKeepCount.
• CVE-2022-43281 - CVSS 7.8 (high), 2022-10-28: wasm-interp v1.0.29 was discovered to contain a heap overflow via the component std::vector<wabt::Type, std::allocator<wabt::Type>>::size() at…
• CVE-2022-43280 - CVSS 7.1 (high), 2022-10-28: wasm-interp v1.0.29 was discovered to contain an out-of-bounds read via the component OnReturnCallExpr->GetReturnCallDropKeepCount.
• CVE-2021-46054 - CVSS 5.5 (medium), 2022-01-10: A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).
• CVE-2021-46055 - CVSS 5.5 (medium), 2022-01-10: A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).
• CVE-2021-46053 - CVSS 5.5 (medium), 2022-01-10: A Denial of Service vulnerability exists in Binaryen 103. The program terminates with signal SIGKILL.
• CVE-2021-46052 - CVSS 5.5 (medium), 2022-01-10: A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::Tuple::validate.