Lupa has a Sandbox escape and RCE due to incomplete attribute_filter enforcement in getattr / setattr
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-284.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Red Hat 1 advisory
- RHSA-2026:22993 Released 2026-06-03 · Red Hat rating Importantsatellite/foreman-mcp-server-rhel9 container image available as a Technology Preview
- Red Hat Satellite 6.18 registry.redhat.io/satellite/foreman-mcp-server-rhel9
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Satellite 6.18 | Fixed | RHSA-2026:22993 |
Not affected: 1 product
- Red Hat OpenShift AI (RHOAI)
Timeline
- 2026-10-02 Threatist record created from CVE-2026-34444
- 2026-10-03 Alias added: GHSA-69v7-xpr6-6gjm
- 2026-10-25 EPSS moved to the below the 50th percentile
- 2026-11-03 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2026-34444 · CVE Program
- CVE-2026-34444 · NVD
- FIRST EPSS
- GHSA-69v7-xpr6-6gjm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-34444 · Red Hat security data · CC BY 4.0
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