gcdRadar
archive/Patch now/AIR-2026-1257
closedclosed 5 Aug 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-17623: Improper Validation in Langflow OSS Allows Arbitrary Command Execution

Langflow OSS

Improper validation of command fields in MCP server configurations within Langflow OSS 1.0.0 through 1.10.3 permits arbitrary command execution. A patch is available and no exploitation has been confirmed.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
8.8
EPSS
0.01 · top 44% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
5 Aug 2026
last update
5 Aug 2026
CVE ids
CVE-2026-17623other records

Timeline · 1

  1. 5 Aug 2026CVE-2026-17623: IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper…

Sources · 1

Advisories and databases

  1. 2026-08-05
    CVE-2026-17623: IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-17623

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
rcemcp
dates
happened 5 Aug 2026 · first reported 5 Aug 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-17623: Improper Validation in Langflow OSS Allows Arbitrary Command Execution

https://gcdradar.vercel.app/incidents/cve-2026-17623-improper-validation-in-langflow-oss-allows-ar · AIR-2026-1257 · closed 2026-08-05

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-08-05
- AI role: Attack on AI
- Products: Langflow OSS
- CVE ids: CVE-2026-17623
- CVSS: 8.8

## Summary

Improper validation of command fields in MCP server configurations within Langflow OSS 1.0.0 through 1.10.3 permits arbitrary command execution. A patch is available and no exploitation has been confirmed.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-08-05: CVE-2026-17623: IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper… (https://nvd.nist.gov/vuln/detail/CVE-2026-17623)

## Sources

- 2026-08-05 NVD: CVE-2026-17623: IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper… https://nvd.nist.gov/vuln/detail/CVE-2026-17623

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

Related

  1. closed6.1
    Langflow CVE-2026-8447: Stored XSS vulnerability in IBM Langflow OSS playground

    Patch now · Disclosed · since 4 Sep 2026 · CVE-2026-8447

    AI
  2. closed7.7
    Langflow CVE-2026-19304: IBM Langflow OSS URL parser discrepancy information disclosure

    Patch now · Disclosed · since 4 Sep 2026 · CVE-2026-19304

    AI
  3. closed7.5
    Langflow CVE-2026-18899: IBM Langflow OSS path traversal vulnerability

    Patch now · Disclosed · since 28 Aug 2026 · CVE-2026-18899

    AI
  4. closed8.8
    Langflow CVE-2026-18729: IBM Langflow OSS code generation control vulnerability

    Patch now · Disclosed · since 28 Aug 2026 · CVE-2026-18729

    AI
  5. closed6.4
    Langflow CVE-2026-19294: IBM Langflow OSS improper authorization vulnerability

    Patch now · Disclosed · since 28 Aug 2026 · CVE-2026-19294

    AI
  6. closed8.2
    Langflow CVE-2026-18891: IBM Langflow OSS improper authentication vulnerability

    Patch now · Disclosed · since 28 Aug 2026 · CVE-2026-18891

    AI