Vulnerability
CVE-2026-105740
Langflow: authenticated remote code execution via the MCP server Stdio command
Most severe levelDEFCON 3 · Substantial risk
Official data
- CVSS 3.1
- 9.9 · critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-78
- EPSS
- 3.89% probability of exploitation in the next 30 days, higher than 90% of CVEs
- CISA KEV catalogue
- No
Sources: NVD (CVSS, weakness, publication), FIRST (EPSS), CISA (KEV catalogue).
Data read on 5 November 2026.
Timeline
- 5 October 2026Published on NVD
- 13 October 2026First in the DefenceLevel briefing
In DefenceLevel briefings3 days
- 4 November 2026New in the last 24 hoursDEFCON 3
- 16 October 2026New in the last 24 hoursDEFCON 4
- 13 October 2026New in the last 24 hoursDEFCON 3
Last 12 months.
The full analysis is in the briefingThe full analysis is in your archive
Why it matters now, who is affected and what to do: every day at 05:00 UTC, for subscribers.Why it matters, who is affected and what to do, as in the daily briefing.