CVE-2026-34444

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.

CVSS 4.0

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

CVSS 3.1

10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-26)

CWEs

CWE-284, CWE-639, CWE-914

Published

2026-04-06

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• scoder:lupa

Packages (OSV)

References

• https://github.com/scoder/lupa/security/advisories/GHSA-69v7-xpr6-6gjm
• https://access.redhat.com/errata/RHSA-2026:22993
• https://access.redhat.com/security/cve/CVE-2026-34444
• https://bugzilla.redhat.com/show_bug.cgi?id=2455413
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34444.json

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