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 v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/scoder/lupa/security/advisories/GHSA-69v7-xpr6-6gjm	Exploit Vendor Advisory
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

Configurations

Configuration 1 (hide)

cpe:2.3:a:scoder:lupa:*:*:*:*:*:python:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Lupa integra los entornos de ejecución de Lua o LuaJIT2 en CPython. En 2.6 y versiones anteriores, attribute_filter no se aplica de forma consistente cuando se accede a los atributos a través de funciones integradas como getattr y setattr. Esto permite a un atacante eludir las restricciones previstas y, finalmente, lograr la ejecución de código arbitrario.

Information

Published : 2026-04-06 16:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-34444

Mitre link : CVE-2026-34444

CVE.ORG link : CVE-2026-34444

JSON object : View

Products Affected

scoder

lupa

CWE

CWE-284

Improper Access Control

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-914

Improper Control of Dynamically-Identified Variables

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Esto permite a un atacante eludir las restricciones previstas y, finalmente, lograr la ejecuci\u00f3n de c\u00f3digo arbitrario."}], "lastModified": "2026-10-26T21:10:00.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:scoder:lupa:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "C4E88FA4-A1EC-4908-9976-79FBCCF4E0D6", "versionEndIncluding": "2.6"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}