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TI-2019-13994 Aliases CVE-2019-19391GHSA-756f-h55r-pvqq

In LuaJIT through 2.0.5, as used in Moonjit before 2.1.2 and other products…

Priority MEDIUM 42CWE-843Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-843 and the CVSS impact.

Summary

In LuaJIT through 2.0.5, as used in Moonjit before 2.1.2 and other products, debug.getinfo has a type confusion issue that leads to arbitrary memory write or read operations, because certain cases involving valid stack levels and > options are mishandled. NOTE: The LuaJIT project owner states that the debug libary is unsafe by definition and that this is not a vulnerability. When LuaJIT was originally developed, the expectation was that the entire debug library had no security guarantees and thus it made no sense to assign CVEs. However, not all users of later LuaJIT derivatives share this perspective

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01396 72nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:luajit:luajit:*:*:*:*:*:*:*:*up to 2.0.5VulnerableLuajit
cpe:2.3:a:moonjit_project:moonjit:*:*:*:*:*:*:*:*before 2.1.2VulnerableMoonjit Project
  • cpe:2.3:a:luajit:luajit:*:*:*:*:*:*:*:* Versions up to 2.0.5 Vulnerable ·Luajit
  • cpe:2.3:a:moonjit_project:moonjit:*:*:*:*:*:*:*:* Versions before 2.1.2 Vulnerable ·Moonjit Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-19391
  2. 2026-10-03 Alias added: GHSA-756f-h55r-pvqq

References

Patch 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences