CVE-2026-34444
Lupa has a Sandbox escape and RCE due to incomplete attribute_filter enforcement in getattr / setattr
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-284 CWE-639 |
| Vendor | scoder |
| Product | lupa |
| Published | Apr 6, 2026 |
| Last Updated | Jul 15, 2026 |
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Affected Versions
scoder / lupa
<= 2.6
References
github.com: https://github.com/scoder/lupa/security/advisories/GHSA-69v7-xpr6-6gjm access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-34444 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2455413 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34444.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22993