CVE-2026-34444 — Lupa has a Sandbox escape and RCE due to incomplete attribute_filter enforcement in getattr / setattr
Lupa integrates the runtimes of Lua or LuaJIT2 into CPython. In 2.6 and earlier, attribute_filter is not consistently applied when attributes are accessed through built-in funct…
Published: 2026-04-06 · CVSS: 7.9 · CVSS 4.0
Lupa integrates the runtimes of Lua or LuaJIT2 into CPython. In 2.6 and earlier, attribute_filter is not consistently applied when attributes are accessed through built-in functions like getattr and setattr. This allows an attacker to bypass the intended restrictions and eventually achieve arbitrary code execution.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7