EUVD-2026-87857

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If...

GHSA-6JG8-7333-554W Sandbox Breakout in realms-shim

Versions of realms-shim prior to 1.2.0 are vulnerable to a Sandbox Breakout. Reflect.construct can be used on the sandboxed Function constructor to reach the prototypes of the primal Realm, which may allow an attacker to escape the sandbox and execute arbitrary code. Recommendation Upgrade to...

Sandbox Breakout in realms-shim

Versions of realms-shim prior to 1.2.0 are vulnerable to a Sandbox Breakout. Reflect.construct can be used on the sandboxed Function constructor to reach the prototypes of the primal Realm, which may allow an attacker to escape the sandbox and execute arbitrary code. Recommendation Upgrade to...

JavaScript V8 Turbofan Out-Of-Bounds Read Exploit

V8: Turbofan may read a Map pointer out-of-bounds when optimizing Reflect.construct The following JavaScript program found through fuzzing triggers an assertion failure in debug builds of the latest v8 and the current release branch, 7.2.502.28: function farg const o =...

Design/Logic Flaw

Incorrect handling of Reflect.construct in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page...

CVE-2018-18359

Incorrect handling of Reflect.construct in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page...

CVE-2018-18359

Incorrect handling of Reflect.construct in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page...

Microsoft Edge Chakra JIT BoundFunction::NewInstance Bug

Microsoft Edge: Chakra: A bug in BoundFunction::NewInstance CVE-2018-8139 BoundFunction::NewInstance is used to handle calls to a bound function. The method first allocates a new argument array and copies the prepended arguments and others into the new argument array and calls the actual function...

Microsoft Edge Chakra JIT - BoundFunction::NewInstance Out-of-Bounds Read

/ BoundFunction::NewInstance is used to handle calls to a bound function. The method first allocates a new argument array and copies the prepended arguments and others into the new argument array and calls the actual function. The problem is, it doesn't care about the CallFlagsExtraArg flag which...

Microsoft Edge Chakra JIT - BoundFunction::NewInstance Out-of-Bounds Read Exploit

Exploit for windows platform in category dos / poc / BoundFunction::NewInstance is used to handle calls to a bound function. The method first allocates a new argument array and copies the prepended arguments and others into the new argument array and calls the actual function. The problem is, it...

Microsoft Edge Chakra JIT - BoundFunction::NewInstance Out-of-Bounds Read

Microsoft Edge Chakra JIT - BoundFunction::NewInstance Out-of-Bounds Read / BoundFunction::NewInstance is used to handle calls to a bound function. The method first allocates a new argument array and copies the prepended arguments and others into the new argument array and calls the actual...

Apple WebKit / Safari 10.0.2(12602.3.12.0.1) - 'PrototypeMap::createEmptyStructure' Universal Cross-Site Scripting

jsCallee // newTarget may be an InternalFunction if we were called from Reflect.construct. JSFunction targetFunction = jsDynamicCastnewTarget; if LIKELYtargetFunction ... return targetFunction-rareDatavm-createInternalFunctionAllocationStructureFromBasevm, prototype, baseClass; ... else ... retur...