CVE-2026-19964 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-19964LOW

Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   P   L   L   L    2.0   .0022   12.5     —

AFFECTED
  Product         Versions  Fixed
  Jij-MCP-Server  0.1.0 –   —

TIMELINE
  Aug 15  EXPLOIT PUBLISHED — CVE-2026-19964 (Jij-Inc Jij-MCP-Server). Public exploit reference added.
  Aug 16  Reserved by VulDB
  Aug 16  Published (CNA: VulDB)
  Aug 17  RESCORED — CVE-2026-19964 (Jij-Inc Jij-MCP-Server). CVSS 5.1 → 2 (NVD).
  Aug 18  EXPLOIT PUBLISHED — CVE-2026-19964 (Jij-Inc Jij-MCP-Server). Public exploit reference added.

CWE-74, CWE-94 · CNA: VulDB · CVSS v4.0 · 5 references · NVD status: Received

Description

A vulnerability was found in Jij-Inc Jij-MCP-Server 0.1.0. This affects the function PythonREPL.run of the file jij_mcp/python_repr.py of the component jm_check. The manipulation of the argument code results in code injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

Lifecycle

Complete event history — 5 events, chronological
Date	Event	Detail
August 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-19964 (Jij-Inc Jij-MCP-Server). Public exploit reference added.
August 16, 2026	Reserved	Reserved by VulDB
August 16, 2026	Published	Published (CNA: VulDB)
August 17, 2026	RESCORED	RESCORED — CVE-2026-19964 (Jij-Inc Jij-MCP-Server). CVSS 5.1 → 2 (NVD).
August 18, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-19964 (Jij-Inc Jij-MCP-Server). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Jij-Inc	Jij-MCP-Server	—	0.1.0	—

Weaknesses

CWE-74 · CWE-94

References (5)

Authoritative record: CVE-2026-19964 at cve.org

Vendors: jij-inc

Weaknesses: CWE-74 · CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-19964 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.