CVE-2026-8257
WebAssembly Binaryen BrOn wasm-ir-builder.cpp makeBrOn assertion
Vexday Risk Score
33Atención
Decisión SSVC (CISA)
Attend
PoC disponible → seguir de cerca
CVSS 4.8EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado
Ciclo de vida
11 may 2026Publicada en NVD
Recomendación: Planificar corrección próxima — ya existe PoC pública.
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.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Productos afectados
WebAssembly · BinaryenPoCs públicas encontradas — 1
cve_referencegithub.com/HackC0der/CVE-Repos/blob/main/wasm-binaryen/Assertion_Failure_isRef_wasm_Type_getHeapType_commit_3ef8d19no verificado⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://github.com/HackC0der/CVE-Repos/blob/main/wasm-binaryen/Assertion_Failure_isRef_wasm_Type_getHeapType_commit_3ef8d19https://github.com/WebAssembly/binaryen/https://github.com/WebAssembly/binaryen/commit/1251efbc1ea471c1311d2726b2bbe061ff2a291chttps://github.com/WebAssembly/binaryen/issues/8633https://github.com/WebAssembly/binaryen/pull/8635https://vuldb.com/submit/809552https://vuldb.com/vuln/362554https://vuldb.com/vuln/362554/cti