px-vm

PerimeterX Auditor VM Analysis Summary This repository documents the reverse engineering of PerimeterX's auditor.js, a bytecode virtual machine used as a secondary fingerprinting layer in PX's bot detection pipeline. This analysis covers: Bytecode extraction and 5-layer decryption pipeline Opcode...

cve-2026-86547-mrubyc-op-enter

CVE-2026-86547 — mrubyc OPENTER NULL Pointer Dereference Standalone proof of concept for CVE-2026-86547 , a NULL pointer dereference in mrubyc's openter handler through release 4.0.0. Summary mrubyc is a lightweight Ruby implementation for embedded systems. Its bytecode VM keeps the current...

MAL-2026-6704 Malicious code in base65-85x (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector d94610a3e8258b4f3f141cda2ade7a2bdeafbf9f8c1a9251d72c8b0c6dd4cff0 Package name base65-85x impersonates the widely-used base-x encoding library, with package.json copying base-x's homepage, bugs.url, and repository.u...

AZL-86369 CVE-2026-41257 affecting package jq for versions less than 1.7.1-6

jq is a command-line JSON processor. In 1.8.1 and earlier, the jq bytecode VM's data stack tracks its allocation size in a signed int. When the stack grows beyond ≈1 GiB via deeply nested generator forks, the doubling arithmetic overflows. The wrapped value is passed to realloc and then used for ...

PT-2026-39711

Name of the Vulnerable Software and Affected Versions jq versions prior to 1.8.2 Description The bytecode VM's data stack tracks its allocation size using a signed integer. When the stack grows beyond approximately 1 GiB through deeply nested generator forks, the doubling arithmetic overflows. Th...