Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
25 results
May 10, 2026A vulnerability was detected in WebAssembly Binaryen up to 117.CVE-2026-8257 · Other software · WebAssembly · reported by VulDBLow 1.9
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 Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The exploit is now public and may be used. The patch is named 1251efbc1ea471c1311d2726b2bbe061ff2a291c. It is suggested to install a patch to address this issue.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 19, 2025A vulnerability was identified in WebAssembly Binaryen up to 125.CVE-2025-14957 · Other software · WebAssembly · reported by VulDBLow 1.9
A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer dereference. Local access is required to approach this attack. The exploit is publicly available and might be used. The name of the patch is 6fb2b917a79578ab44cf3b900a6da4c27251e0d4. Applying a patch is advised to resolve this issue.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 19, 2025A vulnerability was determined in WebAssembly Binaryen up to 125.CVE-2025-14956 · Other software · WebAssembly · reported by VulDBLow 1.9
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 manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 22, 2023Heap-buffer-overflow in /src/wasm/wasm-binary.cpp in wasm::WasmBinaryBuilder::visitBlock(wasm::Block*) in Binaryen 1.38.26.CVE-2020-18382 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 22, 2023A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26.CVE-2020-18378 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 10, 2022A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).CVE-2021-46055 · Other software · Webassembly · reported by MITREMedium 5.5
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 10, 2022A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).CVE-2021-46054 · Other software · Webassembly · reported by MITREMedium 5.5
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 10, 2022A Denial of Service vulnerability exists in Binaryen 103.CVE-2021-46053 · Other software · Webassembly · reported by MITREMedium 5.5
A Denial of Service vulnerability exists in Binaryen 103. The program terminates with signal SIGKILL.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 10, 2022A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::Tuple::validate.CVE-2021-46052 · Other software · Webassembly · reported by MITREMedium 5.5
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::Tuple::validate.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 10, 2022A Stack Overflow vulnerability exists in Binaryen 103 via the printf_common function.CVE-2021-46050 · Other software · Webassembly · reported by MITREMedium 5.5
A Stack Overflow vulnerability exists in Binaryen 103 via the printf_common function.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 10, 2022A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::readFunctions.CVE-2021-46048 · Other software · Webassembly · reported by MITREMedium 5.5
A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::readFunctions.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 21, 2021A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in wasm::WasmBinaryBuilder::visitLet.CVE-2021-45293 · Other software · Webassembly · reported by MITREMedium 5.5
A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in wasm::WasmBinaryBuilder::visitLet.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlists.fedoraproject.org
Dec 21, 2021A Denial of Service vulnerability exits in Binaryen 103 due to an assertion abort in wasm::handle_unreachable.CVE-2021-45290 · Other software · Webassembly · reported by MITREHigh 7.5
A Denial of Service vulnerability exits in Binaryen 103 due to an assertion abort in wasm::handle_unreachable.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlists.fedoraproject.org
Aug 28, 2019An issue was discovered in Binaryen 1.38.32.CVE-2019-15759 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 28, 2019An issue was discovered in Binaryen 1.38.32.CVE-2019-15758 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 10, 2019wasm::WasmBinaryBuilder::readUserSection in wasm-binary.cpp in Binaryen 1.38.22 triggers an attempt at excessive memory allocation, as demonstrated by wasm-mergCVE-2019-7704 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 10, 2019In Binaryen 1.38.22, there is a use-after-free problem in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp.CVE-2019-7703 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 10, 2019A NULL pointer dereference was discovered in wasm::SExpressionWasmBuilder::parseExpression in wasm-s-parser.cpp in Binaryen 1.38.22.CVE-2019-7702 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 10, 2019A heap-based buffer over-read was discovered in wasm::SExpressionParser::skipWhitespace() in wasm-s-parser.cpp in Binaryen 1.38.22.CVE-2019-7701 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 10, 2019A heap-based buffer over-read was discovered in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp in Binaryen 1.38.22.CVE-2019-7700 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 9, 2019An assertion failure was discovered in wasm::WasmBinaryBuilder::getType() in wasm-binary.cpp in Binaryen 1.38.22.CVE-2019-7662 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 28, 2019The 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::JSPrinCVE-2019-7154 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 28, 2019A NULL pointer dereference was discovered in wasm::WasmBinaryBuilder::processFunctions() in wasm/wasm-binary.cpp (when calling wasm::WasmBinaryBuilder::getFunctCVE-2019-7153 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 28, 2019A heap-based buffer over-read was discovered in wasm::WasmBinaryBuilder::processFunctions() in wasm/wasm-binary.cpp (when calling wasm::WasmBinaryBuilder::getFuCVE-2019-7152 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 28, 2019A NULL pointer dereference was discovered in wasm::Module::getFunctionOrNull in wasm/wasm.cpp in Binaryen 1.38.22.CVE-2019-7151 · Other software · Webassembly · reported by MITREMedium 6.5
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.
- Product
- Binaryen
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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