by Kastro
Paper/Archive/CVE-2026-34444

CVE-2026-34444

scoder lupa — Lupa has a Sandbox escape and RCE due to incomplete attribute_filter enforcement in getattr / setattr

EPSS 0.6%public exploitCVSS 10.0
critical.is priorityof 100
50
CVSS 10.0 (NVD)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 49.3.493 × 209.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
lupa<= 2.6–CNA
Red Hat Satellite 6.18see advisory1780492008redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP
Red Hat OpenShift AI (RHOAI)see advisory–redhat-SADP

Scores by source

NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
redhat-SADP (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)7.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: partial

References

refgithub.com/scoder/lupa/security/advisories/GHSA-69v7-xpr6-6gjmrefaccess.redhat.com/security/cve/CVE-2026-34444refbugzilla.redhat.com/show_bug.cgi?id=2455413refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34444.jsonadvisoryaccess.redhat.com/errata/RHSA-2026:22993