VulnerabilityModified
CVE-2026-34444
This allows an attacker to bypass the intended restrictions and eventually achieve arbitrary code execution.
HIGH 7.9EPSS 0.61%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 7.9 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.61% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284, CWE-639, CWE-914
- Affected
- scoder/lupa
- Source
- security-advisories@github.com
References
- https://github.com/scoder/lupa/security/advisories/GHSA-69v7-xpr6-6gjmExploit, 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.