CVE-2026-34444
Critical
Description
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.
SeverityCritical
CVSS10.0
Exploit probability—
ProductScoder Lupa
PublishedApr 6, 2026
First seenApr 6, 2026
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| scoder lupa | v ≤ 2.6 | — |
| lupaPyPI | v ≤ 2.6 | — |
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