CVE-2026-34444

high

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.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34444.json

https://github.com/scoder/lupa/security/advisories/GHSA-69v7-xpr6-6gjm

https://bugzilla.redhat.com/show_bug.cgi?id=2455413

https://access.redhat.com/security/cve/CVE-2026-34444

https://access.redhat.com/errata/RHSA-2026:22993

Details

Source: Mitre, NVD

Published: 2026-04-06

Updated: 2026-06-30

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 10

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 7.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

Severity: High

EPSS

EPSS: 0.00068